Eternity's Timeline By Eternity1 Jan 1, 1972 Population 1972 Period: Jan 1, 1972 to Dec 31, 1972 1972 Population 3,842,873,611 Jan 1, 1985 Population 1985 Period: Jan 1, 1985 to Dec 31, 1985 1985 Midyear Population 4,863,601,517 Period: Jan 1, 2006 to Dec 31, 2006 2006 Midyear Population 6,593,227,977 Aug 16, 2006 Population 2006