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World Population Growth Through History. Billions. 12. 11. 2100. 10. 9. Modern. Age. Old. 8. Iron. Middle. Bronze. Stone. Age. New Stone Age. Ages. Age. Age. 7. Future. 6. 2000. 5. 4. 1975. 3. 1950. 2. 1900. 1. 1800. Black Death. —. The Plague. 2000.
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World Population Growth Through History Billions 12 11 2100 10 9 Modern Age Old 8 Iron Middle Bronze Stone Age New Stone Age Ages Age Age 7 Future 6 2000 5 4 1975 3 1950 2 1900 1 1800 Black Death — The Plague 2000 1+ million 7000 6000 5000 3000 1000 A.D. 4000 A.D. A.D. A.D. A.D. A.D. years B.C. B.C. B.C. B.C. B.C. B.C. B.C. 1 1000 2000 3000 4000 5000 Source: Population Reference Bureau; and United Nations, World Population Projections to 2100 (1998).