Chart of the day

Year	Population	Births per 1,000	Births Between Benchmarks
50,000 B.C.	2	-	-
8000 B.C.	5,000,000	80	1,137,789,769
1 A.D.	300,000,000	80	46,025,332,354
1200	450,000,000	60	26,591,343,000
1650	500,000,000	60	12,782,002,453
1750	795,000,000	50	3,171,931,513
1850	1,265,000,000	40	4,046,240,009
1900	1,656,000,000	40	2,900,237,856
1950	2,516,000,000	31-38	3,390,198,215
1995	5,760,000,000	31	5,427,305,000
2002	6,215,000,000	23	983,987,500

Number who have ever been born	106,456,367,669
World population in mid-2002	6,215,000,000
Percent of those ever born who are living in 2002	5.8

Source here, via Eric Barker.