WORLD POPULATION GROWTH HISTORY
POPULATION Year Reached Time Span (Years)

1.00 Billion 1800 65,000+
2.00 Billion 1930 130
3.00 Billion 1960 30
4.00 Billion 1974 14
5.00 Billion 1987 13
6.00 Billion 1999 12
6.75 Billion 2007 8

Oct. 10, 2007.