Global historical population data
The population data starts from -1000000 BC to 1990 with the average number of people.
There are several population data from the different reports such as: Deevey,McEvedy and Jones 1978,Durand Low,Durand High,Clark,Biraben,Blaxter,UN,Kremer.
Source: Appendix in Joel E. Cohen, How Many People Can the Earth Support?, Norton 1996, ISBN 0-393-31495-2.
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