| U.S. adults | |
|---|---|
| 3/31/2000 | 1% |
| 3/1/2001 | 6% |
| 9/10/2001 | 7% |
| 9/19/2001 | 7% |
| 10/1/2001 | 6% |
| 10/7/2001 | 6% |
| 10/18/2001 | 8% |
| 11/18/2001 | 8% |
| 12/23/2001 | 9% |
| 1/31/2002 | 9% |
| 5/19/2002 | 11% |
| 7/26/2002 | 11% |
| 10/6/2002 | 15% |
| 10/27/2002 | 12% |
| 11/24/2002 | 15% |
| 12/22/2002 | 12% |
| 3/24/2003 | 15% |
| 3/25/2003 | 16% |
| 5/20/2003 | 16% |
| 6/24/2003 | 16% |
| 8/3/2003 | 17% |
| 12/14/2003 | 19% |
| 3/1/2004 | 24% |
| 3/17/2004 | 25% |
| 6/17/2004 | 23% |
| 7/3/2004 | 25% |
| 11/22/2004 | 26% |
| 11/30/2004 | 25% |
| 2/9/2005 | 29% |
| 3/21/2005 | 29% |
| 6/7/2005 | 33% |
| 12/8/2005 | 37% |
| 12/31/2005 | 36% |
| 2/6/2006 | 41% |
| 3/28/2006 | 42% |
| 4/6/2006 | 42% |
| 8/31/2006 | 43% |
| 12/4/2006 | 46% |
| 12/30/2006 | 44% |
| 9/5/2007 | 51% |
| 12/2/2007 | 54% |
| 1/13/2008 | 51% |
| 5/11/2008 | 54% |
| 8/10/2008 | 58% |
| 8/31/2008 | 57% |
| 12/4/2008 | 56% |
| 12/20/2008 | 55% |
| 4/19/2009 | 62% |
| 6/21/2009 | 62% |
| 9/14/2009 | 62% |
| 12/27/2009 | 59% |
| 1/19/2010 | 61% |
| 5/30/2010 | 64% |
| 9/13/2010 | 60% |
| 11/24/2010 | 60% |
| 12/21/2010 | 62% |
| 5/22/2011 | 60% |
| 8/26/2011 | 62% |
| 1/8/2012 | 67% |
| 2/19/2012 | 65% |
| 4/3/2012 | 66% |
| 11/10/2012 | 68% |
| 12/9/2012 | 65% |
| 5/19/2013 | 70% |
| 9/30/2013 | 70% |
| 4/12/2015 | 66% |
| 7/12/2015 | 67% |
| 11/15/2015 | 67% |
| 4/4/2016 | 70% |
| 11/6/2016 | 73% |
| 1/10/2018 | 65% |
| 2/7/2019 | 73% |
| 2/8/2021 | 77% |
- Report
|
