| Year | Less than $30K | $30K-$49,999 | $50K-$74,999 | $75K+ |
|---|---|---|---|---|
| 2005 | 4 | 8 | 8 | 12 |
| 2006 | 8 | 16 | 9 | 10 |
| 2008 | 24 | 28 | 27 | 30 |
| 2009 | 33 | 41 | 44 | 50 |
| 2010 | 39 | 49 | 52 | 58 |
| 2011 | 42 | 57 | 55 | 65 |
| 2012 | 50 | 58 | 59 | 69 |
| 2013 | 57 | 63 | 69 | 72 |
| 2014 | 58 | 64 | 67 | 74 |
| 2015 | 56 | 69 | 72 | 78 |
Source: Pew Research Center surveys, 2005-2006, 2008-2015. No data are available for 2007.
