| Year | U.S. born | Foreign born |
|---|---|---|
| 1960 | 5.5 | 0.9 |
| 1970 | 7.8 | 1.8 |
| 1980 | 10.6 | 4.2 |
| 1990 | 14.0 | 7.8 |
| 2000 | 21.1 | 14.1 |
| 2006 | 26.6 | 17.7 |
| 2007 | 27.3 | 18.0 |
| 2008 | 29.0 | 17.8 |
| 2009 | 30.3 | 18.1 |
| 2010 | 31.9 | 18.8 |
| 2011 | 33.1 | 18.8 |
| 2012 | 34.1 | 18.8 |
| 2013 | 35.0 | 19.0 |
| 2014 | 35.9 | 19.3 |
| 2015 | 37.1 | 19.4 |
Source: For 1960 and 1970, see Passel and Cohn’s 2008 population projections. For 1980-2000, Pew Research Center analysis of U.S. decennial census data (5% IPUMS). For 2006-2015, Pew Research Center analysis of American Community Survey (1% IPUMS).
