07/01/11 6,946,043,989 08/01/11 6,952,589,639 09/01/11 6,959,135,290 10/01/11 6,965,469,791 11/01/11 6,972,015,442 12/01/11 6,978,349,943 01/01/12 6,984,895,594 02/01/12 6,991,441,244 03/01/12 6,997,564,595 04/01/12 7,004,110,246 05/01/12 7,010,444,747 06/01/12 7,016,990,398 07/01/12 7,023,324,899
Source: U.S. Census Bureau, International Data Base