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{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_019PQZQxXjwzq2auct6jCtGY","type":"tool_result","content":"tables: 20\nkeyword: null\nTABLE 0: World population milestones in billions[62] (Worldometers estimates)\nWorld population milestones in billions[62] (Worldometers estimates)\nPopulation\n(in billions)\t1\t2\t3\t4\t5\t6\t7\t8\t9\t10\nYear\t1804\t1927\t1960\t1974\t1987\t1999\t2011\t2022\t2037\t2057\nYears elapsed\t—\t123\t33\t14\t13\t12\t12\t11\t15\t 20 \t—\n\nTABLE 1: Current world population and latest projection according to the UN. Population in (millions) and percent of the global population in that year.[91]\nCurrent world population and latest projection according to the UN. Population in (millions) and percent of the global population in that year.[91]\nRegion\t2022 (percent)\t2030 (percent)\t2050 (percent)\nSub-Saharan Africa\t1,152 (14.51%)\t1,401 (16.46%)\t2,094 (21.62%)\nNorthern Africa and Western Asia\t549 (6.91%)\t617 (7.25%)\t771 (7.96%)\nCentral Asia and Southern Asia\t2,075 (26.13%)\t2,248 (26.41%)\t2,575 (26.58%)\nEastern Asia and Southeastern Asia\t2,342 (29.49%)\t2,372 (27.87%)\t2,317 (23.92%)\nEurope and Northern America\t1,120 (14.10%)\t1,129 (13.26%)\t1,125 (11.61%)\nLatin America and the Caribbean\t658 (8.29%)\t695 (8.17%)\t749 (7.73%)\nAustralia and New Zealand\t31 (0.39%)\t34 (0.40%)\t38 (0.39%)\nOceania\t14 (0.18%)\t15 (0.18%)\t20 (0.21%)\nWorld\t7,942\t8,512\t9,687\n\nTABLE 2: Population by region (2020 estimates)\nPopulation by region (2020 estimates)\nRegion\tDensity\n(inhabitants/km2)\tPopulation\n(millions)\tMost populous country\tMost populous city (metropolitan area)\nAsia\t104.1\t4,641\t1,439,090,595 –  India\t13,515,000 –  Tokyo Metropolis\n(37,400,000 –  Greater Tokyo Area)\nAfrica\t44.4\t1,340\t211,401,000 –  Nigeria\t9,500,000 –  Cairo\n(20,076,000 –  Greater Cairo)\nEurope\t73.4\t747\t146,171,000 –  Russia, approx. 110 million in Europe\t13,200,000 –  Moscow\n(20,004,000 –  Moscow metropolitan area)\nLatin America\t24.1\t653\t214,103,000 –  Brazil\t12,252,000 –  São Paulo City\n(21,650,000 –  São Paulo Metro Area)\nNorthern America[note 1]\t14.9\t368\t332,909,000 –  United States\t8,804,000 –  New York City\n(23,582,649 –  New York metropolitan area[92])\nOceania\t5\t42\t25,917,000 –  Australia\t5,367,000 –  Sydney\nAntarctica\t~0\t0.004[90]\tN/A[note 2]\t1,258 –  McMurdo Station\n\nTABLE 3: Country / Dependency\tPopulation\t% of\nCountry / Dependency\tPopulation\t% of\nworld\tDate\tSource (official or from\nthe United Nations)\n India\t1,425,775,850\t17.3%\t14 Apr 2023\tUN projection[93]\n China\t1,409,670,000\t17.1%\t17 Jan 2024\tNational annual estimate[94]\n United States\t339,137,626\t4.12%\t2 Apr 2026\tNational population clock[95]\n Indonesia\t278,696,200\t3.38%\t1 Jul 2023\tNational annual estimate[96]\n Pakistan\t229,488,994\t2.79%\t1 Jul 2022\tUN projection[97]\n Brazil\t220,502,943\t2.68%\t2 Apr 2026\tNational population clock[98]\n Nigeria\t216,746,934\t2.63%\t1 Jul 2022\tUN projection[97]\n Bangladesh\t168,220,000\t2.04%\t1 Jul 2020\tAnnual Population Estimate[99]\n Russia\t147,190,000\t1.79%\t1 Oct 2021\t2021 preliminary census results[100]\n Mexico\t128,271,248\t1.56%\t31 Mar 2022\n\nTABLE 4: World population (millions, UN estimates)[101]\nWorld population (millions, UN estimates)[101]\n#\tMost populous countries\t2000\t2015\t2030[A]\t\n\nY axis\nX axis\n0\n300\n600\n900\n1200\n1500\n1800\n2000\n2015\n2030\nChina\nIndia\nUnited States\nIndonesia\nPakistan\nBrazil\nNigeria\nBangladesh\nRussia\nMexico\nTen most populous countries\n\n... (4713 chars omitted, 12679 total) ...\n\n2022\t7,975,105,156\t0.83%\t65,810,005\t54\n2023\t8,045,311,447\t0.88%\t70,206,291\t54\n\nTABLE 8: World historical and predicted populations (in millions)[118][63][119]\nWorld historical and predicted populations (in millions)[118][63][119]\nRegion\t1500\t1600\t1700\t1750\t1800\t1850\t1900\t1950\t1999\t2008\t2010\t2012\t2050\t2150\nWorld\t585\t660\t710\t791\t978\t1,262\t1,650\t2,521\t6,008\t6,707\t6,896\t7,052\t9,725\t9,746\nAfrica\t86\t114\t106\t106\t107\t111\t133\t221\t783\t973\t1,022\t1,052\t2,478\t2,308\nAsia\t282\t350\t411\t502\t635\t809\t947\t1,402\t3,700\t4,054\t4,164\t4,250\t5,267\t5,561\nEurope\t168\t170\t178\t190\t203\t276\t408\t547\t675\t732\t738\t740\t734\t517\nLatin America[Note 1]\t40\t20\t10\t16\t24\t38\t74\t167\t508\t577\t590\t603\t784\t912\nNorthern America[Note 1]\t6\t3\t2\t2\t7\t26\t82\t172\t312\t337\t345\t351\t433\t398\nOceania\t3\t3\t3\t2\t2\t2\t6\t13\t30\t34\t37\t38\t57\t51\n\nTABLE 9: World historical and predicted populations by percentage distribution[118][63]\nWorld historical and predicted populations by percentage distribution[118][63]\nRegion\t1500\t1600\t1700\t1750\t1800\t1850\t1900\t1950\t1999\t2008\t2010\t2012\t2050\t2150\nAfrica\t14.7\t17.3\t14.9\t13.4\t10.9\t8.8\t8.1\t8.8\t13.0\t14.5\t14.8\t15.2\t25.5\t23.7\nAsia\t48.2\t53.0\t57.9\t63.5\t64.9\t64.1\t57.4\t55.6\t61.6\t60.4\t60.4\t60.3\t54.2\t57.1\nEurope\t28.7\t25.8\t25.1\t20.6\t20.8\t21.9\t24.7\t21.7\t11.2\t10.9\t10.7\t10.5\t7.6\t5.3\nLatin America[Note 1]\t6.8\t3.0\t1.4\t2.0\t2.5\t3.0\t4.5\t6.6\t8.5\t8.6\t8.6\t8.6\t8.1\t9.4\nNorthern America[Note 1]\t1.0\t0.5\t0.3\t0.3\t0.7\t2.1\t5.0\t6.8\t5.2\t5.0\t5.0\t5.0\t4.5\t4.1\nOceania\t0.5\t0.5\t0.4\t0.3\t0.2\t0.2\t0.4\t0.5\t0.5\t0.5\t0.5\t0.5\t0.6\t0.5\n\nTABLE 10: Year\tWorld\tAfrica\tAsia\tEurope\tLatin America\nYear\tWorld\tAfrica\tAsia\tEurope\tLatin America\n& Carib.[Note 1]\tNorth America\n[Note 1]\tOceania\tNotes\n70,000 BC\t< 0.015\t\t\t\t\t\t\t[121]\n10,000 BC\t4\t\t\t\t\t\t\t[122]\n8000 BC\t5\t\t\t\t\t\t\t\n6500 BC\t5\t\t\t\t\t\t\t\n5000 BC\t5\t\t\t\t\t\t\t\n4000 BC\t7\t\t\t\t\t\t\t\n3000 BC\t14\t\t\t\t\t\t\t\n2000 BC\t27\t\t\t\t\t\t\t\n1000 BC\t50\t7\t33\t9\t\t\t\t[citation needed]\n500 BC\t100\t14\t66\t16\t\t\t\t\nAD 1\t200\t23\t141\t28\t\t\t\t\n1000\t400\t70\t269\t50\t8\t1\t2\t\n1500\t458\t86\t243\t84\t39\t3\t3\t\n1600\t580\t114\t339\t111\t10\t3\t3\t\n1700\t682\t106\t436\t125\t10\t2\t3\t\n1750\t791\t106\t502\t163\t16\t2\t2\t\n1800\t1,000\t107\t656\t203\t24\t7\t3\t\n1850\t1,262\t111\t809\t276\t38\t26\t2\t\n1900\t1,650\t133\t947\t408\t74\t82\t6\t\n1950\t2,525\t229\t1,394\t549\t169\t172\t12.7\t[123]\n1955\t2,758\t254\t1,534\t577\t193\t187\t14.2\t\n1960\t3,018\t285\t1,687\t606\t221\t204\t15.8\t\n1965\t3,322\t322\t1,875\t635\t254\t219\t17.5\t\n1970\t3,682\t366\t2,120\t657\t288\t231\t19.7\t\n1975\t4,061\t416\t2,378\t677\t326\t242\t21.5\t\n1980\t4,440\t478\t2,626\t694\t365\t254\t23.0\t\n1985\t4,853\t550\t2,897\t708\t406\t267\t24.9\t\n1990\t5,310\t632\t3,202\t721\t447\t281\t27.0\t\n1995\t5,735\t720\t3,475\t728\t487\t296\t29.1\t\n2000\t6,127\t814\t3,714\t726\t527\t314\t31.1\t\n2005\t6,520\t920\t3,945\t729\t564\t329\t33.4\t\n2010\t6,930\t1,044\t4,170\t735\t600\t344\t36.4\t\n2015\t7,349\t1,186\t4,393\t738\t634\t358\t39.3\n\nTABLE 11: This section needs additional citations for verification. Please help improve th\nThis section needs additional citations for verification. Please help improve this article by adding citations to reliable sources in this section. Unsourced material may be challenged and removed. (April 2020) (Learn how and when to remove this message)\n\nTABLE 12: UN (medium variant – 2019 revision) and US Census Bureau (June 2015) estimates[97][123]\nUN (medium variant – 2019 revision) and US Census Bureau (June 2015) estimates[97][123]\nYear\tUN est.\n(millions)\tDifference\tUSCB est.\n(millions)\tDifference\n2005\t6,542\t–\t6,473\t–\n2010\t6,957\t415\t6,866\t393\n2015\t7,380\t423\t7,256\t390\n2020\t7,795\t415\t7,643\t380\n2025\t8,184\t390\t8,007\t363\n2030\t8,549\t364\t8,341\t334\n2035\t8,888\t339\t8,646\t306\n2040\t9,199\t311\t8,926\t280\n2045\t9,482\t283\t9,180\t254\n2050\t9,735\t253\t9,408\t228\n\nTABLE 13: UN 2024 estimates and medium variant projections (in millions)[150]\nUN 2024 estimates and medium variant projections (in millions)[150]\nYear\tWorld\tAsia\tAfrica\tEurope\tLatin Am./\nCaribbean\tNorthern\nAmerica\tOceania\n2000\t6,144\t3,741\n(60.9%)\t811\n(13.2%)\t726\n(11.8%)\t522\n(8.5%)\t312\n(5.1%)\t31\n(0.5%)\n2024\t8,160\t4,810\n(58.9%)\t1,520\n(18.6%)\t745\n(9.1%)\t663\n(8.1%)\t385\n(4.7%)\t46\n(0.6%)\n2050\t9,660\t5,280\n(54.7%)\t2,470\n(25.6%)\t703\n(7.3%)\t730\n(7.6%)\t426\n(4.4%)\t57\n(0.6%)\n2075\t10,250\t5,100\n(49.8%)\t3,290\n(32.1%)\t636\n(6.2%)\t698\n(6.8%)\t452\n(4.4%)\t66\n(0.6%)\n2100\t10,180\t4,610","is_error":false}]},"parent_tool_use_id":null,"session_id":"217d41a3-1eb2-4845-8b9b-af6d774c65e0","uuid":"c0d798b7-653b-415c-99a4-f4bf71c024ad","timestamp":"2026-04-04T06:03:15.994Z","tool_use_result":{"stdout":"tables: 20\nkeyword: null\nTABLE 0: World population milestones in billions[62] (Worldometers estimates)\nWorld population milestones in billions[62] (Worldometers estimates)\nPopulation\n(in billions)\t1\t2\t3\t4\t5\t6\t7\t8\t9\t10\nYear\t1804\t1927\t1960\t1974\t1987\t1999\t2011\t2022\t2037\t2057\nYears elapsed\t—\t123\t33\t14\t13\t12\t12\t11\t15\t 20 \t—\n\nTABLE 1: Current world population and latest projection according to the UN. Population in (millions) and percent of the global population in that year.[91]\nCurrent world population and latest projection according to the UN. Population in (millions) and percent of the global population in that year.[91]\nRegion\t2022 (percent)\t2030 (percent)\t2050 (percent)\nSub-Saharan Africa\t1,152 (14.51%)\t1,401 (16.46%)\t2,094 (21.62%)\nNorthern Africa and Western Asia\t549 (6.91%)\t617 (7.25%)\t771 (7.96%)\nCentral Asia and Southern Asia\t2,075 (26.13%)\t2,248 (26.41%)\t2,575 (26.58%)\nEastern Asia and Southeastern Asia\t2,342 (29.49%)\t2,372 (27.87%)\t2,317 (23.92%)\nEurope and Northern America\t1,120 (14.10%)\t1,129 (13.26%)\t1,125 (11.61%)\nLatin America and the Caribbean\t658 (8.29%)\t695 (8.17%)\t749 (7.73%)\nAustralia and New Zealand\t31 (0.39%)\t34 (0.40%)\t38 (0.39%)\nOceania\t14 (0.18%)\t15 (0.18%)\t20 (0.21%)\nWorld\t7,942\t8,512\t9,687\n\nTABLE 2: Population by region (2020 estimates)\nPopulation by region (2020 estimates)\nRegion\tDensity\n(inhabitants/km2)\tPopulation\n(millions)\tMost populous country\tMost populous city (metropolitan area)\nAsia\t104.1\t4,641\t1,439,090,595 –  India\t13,515,000 –  Tokyo Metropolis\n(37,400,000 –  Greater Tokyo Area)\nAfrica\t44.4\t1,340\t211,401,000 –  Nigeria\t9,500,000 –  Cairo\n(20,076,000 –  Greater Cairo)\nEurope\t73.4\t747\t146,171,000 –  Russia, approx. 110 million in Europe\t13,200,000 –  Moscow\n(20,004,000 –  Moscow metropolitan area)\nLatin America\t24.1\t653\t214,103,000 –  Brazil\t12,252,000 –  São Paulo City\n(21,650,000 –  São Paulo Metro Area)\nNorthern America[note 1]\t14.9\t368\t332,909,000 –  United States\t8,804,000 –  New York City\n(23,582,649 –  New York metropolitan area[92])\nOceania\t5\t42\t25,917,000 –  Australia\t5,367,000 –  Sydney\nAntarctica\t~0\t0.004[90]\tN/A[note 2]\t1,258 –  McMurdo Station\n\nTABLE 3: Country / Dependency\tPopulation\t% of\nCountry / Dependency\tPopulation\t% of\nworld\tDate\tSource (official or from\nthe United Nations)\n India\t1,425,775,850\t17.3%\t14 Apr 2023\tUN projection[93]\n China\t1,409,670,000\t17.1%\t17 Jan 2024\tNational annual estimate[94]\n United States\t339,137,626\t4.12%\t2 Apr 2026\tNational population clock[95]\n Indonesia\t278,696,200\t3.38%\t1 Jul 2023\tNational annual estimate[96]\n Pakistan\t229,488,994\t2.79%\t1 Jul 2022\tUN projection[97]\n Brazil\t220,502,943\t2.68%\t2 Apr 2026\tNational population clock[98]\n Nigeria\t216,746,934\t2.63%\t1 Jul 2022\tUN projection[97]\n Bangladesh\t168,220,000\t2.04%\t1 Jul 2020\tAnnual Population Estimate[99]\n Russia\t147,190,000\t1.79%\t1 Oct 2021\t2021 preliminary census results[100]\n Mexico\t128,271,248\t1.56%\t31 Mar 2022\n\nTABLE 4: World population (millions, UN estimates)[101]\nWorld population (millions, UN estimates)[101]\n#\tMost populous countries\t2000\t2015\t2030[A]\t\n\nY axis\nX axis\n0\n300\n600\n900\n1200\n1500\n1800\n2000\n2015\n2030\nChina\nIndia\nUnited States\nIndonesia\nPakistan\nBrazil\nNigeria\nBangladesh\nRussia\nMexico\nTen most populous countries\n\n... (4713 chars omitted, 12679 total) ...\n\n2022\t7,975,105,156\t0.83%\t65,810,005\t54\n2023\t8,045,311,447\t0.88%\t70,206,291\t54\n\nTABLE 8: World historical and predicted populations (in millions)[118][63][119]\nWorld historical and predicted populations (in millions)[118][63][119]\nRegion\t1500\t1600\t1700\t1750\t1800\t1850\t1900\t1950\t1999\t2008\t2010\t2012\t2050\t2150\nWorld\t585\t660\t710\t791\t978\t1,262\t1,650\t2,521\t6,008\t6,707\t6,896\t7,052\t9,725\t9,746\nAfrica\t86\t114\t106\t106\t107\t111\t133\t221\t783\t973\t1,022\t1,052\t2,478\t2,308\nAsia\t282\t350\t411\t502\t635\t809\t947\t1,402\t3,700\t4,054\t4,164\t4,250\t5,267\t5,561\nEurope\t168\t170\t178\t190\t203\t276\t408\t547\t675\t732\t738\t740\t734\t517\nLatin America[Note 1]\t40\t20\t10\t16\t24\t38\t74\t167\t508\t577\t590\t603\t784\t912\nNorthern America[Note 1]\t6\t3\t2\t2\t7\t26\t82\t172\t312\t337\t345\t351\t433\t398\nOceania\t3\t3\t3\t2\t2\t2\t6\t13\t30\t34\t37\t38\t57\t51\n\nTABLE 9: World historical and predicted populations by percentage distribution[118][63]\nWorld historical and predicted populations by percentage distribution[118][63]\nRegion\t1500\t1600\t1700\t1750\t1800\t1850\t1900\t1950\t1999\t2008\t2010\t2012\t2050\t2150\nAfrica\t14.7\t17.3\t14.9\t13.4\t10.9\t8.8\t8.1\t8.8\t13.0\t14.5\t14.8\t15.2\t25.5\t23.7\nAsia\t48.2\t53.0\t57.9\t63.5\t64.9\t64.1\t57.4\t55.6\t61.6\t60.4\t60.4\t60.3\t54.2\t57.1\nEurope\t28.7\t25.8\t25.1\t20.6\t20.8\t21.9\t24.7\t21.7\t11.2\t10.9\t10.7\t10.5\t7.6\t5.3\nLatin America[Note 1]\t6.8\t3.0\t1.4\t2.0\t2.5\t3.0\t4.5\t6.6\t8.5\t8.6\t8.6\t8.6\t8.1\t9.4\nNorthern America[Note 1]\t1.0\t0.5\t0.3\t0.3\t0.7\t2.1\t5.0\t6.8\t5.2\t5.0\t5.0\t5.0\t4.5\t4.1\nOceania\t0.5\t0.5\t0.4\t0.3\t0.2\t0.2\t0.4\t0.5\t0.5\t0.5\t0.5\t0.5\t0.6\t0.5\n\nTABLE 10: Year\tWorld\tAfrica\tAsia\tEurope\tLatin America\nYear\tWorld\tAfrica\tAsia\tEurope\tLatin America\n& Carib.[Note 1]\tNorth America\n[Note 1]\tOceania\tNotes\n70,000 BC\t< 0.015\t\t\t\t\t\t\t[121]\n10,000 BC\t4\t\t\t\t\t\t\t[122]\n8000 BC\t5\t\t\t\t\t\t\t\n6500 BC\t5\t\t\t\t\t\t\t\n5000 BC\t5\t\t\t\t\t\t\t\n4000 BC\t7\t\t\t\t\t\t\t\n3000 BC\t14\t\t\t\t\t\t\t\n2000 BC\t27\t\t\t\t\t\t\t\n1000 BC\t50\t7\t33\t9\t\t\t\t[citation needed]\n500 BC\t100\t14\t66\t16\t\t\t\t\nAD 1\t200\t23\t141\t28\t\t\t\t\n1000\t400\t70\t269\t50\t8\t1\t2\t\n1500\t458\t86\t243\t84\t39\t3\t3\t\n1600\t580\t114\t339\t111\t10\t3\t3\t\n1700\t682\t106\t436\t125\t10\t2\t3\t\n1750\t791\t106\t502\t163\t16\t2\t2\t\n1800\t1,000\t107\t656\t203\t24\t7\t3\t\n1850\t1,262\t111\t809\t276\t38\t26\t2\t\n1900\t1,650\t133\t947\t408\t74\t82\t6\t\n1950\t2,525\t229\t1,394\t549\t169\t172\t12.7\t[123]\n1955\t2,758\t254\t1,534\t577\t193\t187\t14.2\t\n1960\t3,018\t285\t1,687\t606\t221\t204\t15.8\t\n1965\t3,322\t322\t1,875\t635\t254\t219\t17.5\t\n1970\t3,682\t366\t2,120\t657\t288\t231\t19.7\t\n1975\t4,061\t416\t2,378\t677\t326\t242\t21.5\t\n1980\t4,440\t478\t2,626\t694\t365\t254\t23.0\t\n1985\t4,853\t550\t2,897\t708\t406\t267\t24.9\t\n1990\t5,310\t632\t3,202\t721\t447\t281\t27.0\t\n1995\t5,735\t720\t3,475\t728\t487\t296\t29.1\t\n2000\t6,127\t814\t3,714\t726\t527\t314\t31.1\t\n2005\t6,520\t920\t3,945\t729\t564\t329\t33.4\t\n2010\t6,930\t1,044\t4,170\t735\t600\t344\t36.4\t\n2015\t7,349\t1,186\t4,393\t738\t634\t358\t39.3\n\nTABLE 11: This section needs additional citations for verification. Please help improve th\nThis section needs additional citations for verification. Please help improve this article by adding citations to reliable sources in this section. Unsourced material may be challenged and removed. (April 2020) (Learn how and when to remove this message)\n\nTABLE 12: UN (medium variant – 2019 revision) and US Census Bureau (June 2015) estimates[97][123]\nUN (medium variant – 2019 revision) and US Census Bureau (June 2015) estimates[97][123]\nYear\tUN est.\n(millions)\tDifference\tUSCB est.\n(millions)\tDifference\n2005\t6,542\t–\t6,473\t–\n2010\t6,957\t415\t6,866\t393\n2015\t7,380\t423\t7,256\t390\n2020\t7,795\t415\t7,643\t380\n2025\t8,184\t390\t8,007\t363\n2030\t8,549\t364\t8,341\t334\n2035\t8,888\t339\t8,646\t306\n2040\t9,199\t311\t8,926\t280\n2045\t9,482\t283\t9,180\t254\n2050\t9,735\t253\t9,408\t228\n\nTABLE 13: UN 2024 estimates and medium variant projections (in millions)[150]\nUN 2024 estimates and medium variant projections (in millions)[150]\nYear\tWorld\tAsia\tAfrica\tEurope\tLatin Am./\nCaribbean\tNorthern\nAmerica\tOceania\n2000\t6,144\t3,741\n(60.9%)\t811\n(13.2%)\t726\n(11.8%)\t522\n(8.5%)\t312\n(5.1%)\t31\n(0.5%)\n2024\t8,160\t4,810\n(58.9%)\t1,520\n(18.6%)\t745\n(9.1%)\t663\n(8.1%)\t385\n(4.7%)\t46\n(0.6%)\n2050\t9,660\t5,280\n(54.7%)\t2,470\n(25.6%)\t703\n(7.3%)\t730\n(7.6%)\t426\n(4.4%)\t57\n(0.6%)\n2075\t10,250\t5,100\n(49.8%)\t3,290\n(32.1%)\t636\n(6.2%)\t698\n(6.8%)\t452\n(4.4%)\t66\n(0.6%)\n2100\t10,180\t4,610","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false}}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01K7kWXrPCKFogzafscU3Nuk","type":"message","role":"assistant","content":[{"type":"text","text":"Here are the years when world population reached each billion milestone, from **Table 0** of the Wikipedia article (Worldometers estimates):\n\n| Population | Year Reached |\n|------------|-------------|\n| 1 billion  | 1804        |\n| 2 billion  | 1927        |\n| 3 billion  | 1960        |\n| 4 billion  | 1974        |\n| 5 billion  | 1987        |\n| 6 billion  | 1999        |\n| 7 billion  | 2011        |\n| 8 billion  | 2022        |\n\nNotable observations: it took 123 years to go from 1→2 billion, but only 11–14 years for each subsequent billion after that."}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":3532,"cache_read_input_tokens":16347,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":3532},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"217d41a3-1eb2-4845-8b9b-af6d774c65e0","uuid":"45f90ce7-f7e5-490b-adce-8a3b8e30ba29"}
{"type":"result","subtype":"success","is_error":false,"duration_ms":11759,"duration_api_ms":9612,"num_turns":2,"result":"Here are the years when world population reached each billion milestone, from **Table 0** of the Wikipedia article (Worldometers estimates):\n\n| Population | Year Reached |\n|------------|-------------|\n| 1 billion  | 1804        |\n| 2 billion  | 1927        |\n| 3 billion  | 1960        |\n| 4 billion  | 1974        |\n| 5 billion  | 1987        |\n| 6 billion  | 1999        |\n| 7 billion  | 2011        |\n| 8 billion  | 2022        |\n\nNotable observations: it took 123 years to go from 1→2 billion, but only 11–14 years for each subsequent billion after that.","stop_reason":"end_turn","session_id":"217d41a3-1eb2-4845-8b9b-af6d774c65e0","total_cost_usd":0.054308999999999996,"usage":{"input_tokens":3,"cache_creation_input_tokens":11276,"cache_read_input_tokens":24950,"output_tokens":302,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":11276,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"},"modelUsage":{"claude-sonnet-4-6":{"inputTokens":3,"outputTokens":302,"cacheReadInputTokens":24950,"cacheCreationInputTokens":11276,"webSearchRequests":0,"costUSD":0.054308999999999996,"contextWindow":200000,"maxOutputTokens":32000}},"permission_denials":[],"fast_mode_state":"off","uuid":"3626f962-cc53-4847-a74c-5ddd0a789106"}
