An official website of the United States government
Number of years since starting | Year | |||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | |
1 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
2 | 79.6 | 78.8 | 78.2 | 78.5 | 80.1 | 79.1 | 78.4 | 75.7 | 78.4 | 79.3 | 78.9 | 80.1 | 78.3 | 77.3 | 75.2 | 76.7 | 78.6 | 79.4 | 79.2 | 79.6 | 79.9 | – |
3 | 68.1 | 67.9 | 66.9 | 68.3 | 68.5 | 67.0 | 66.0 | 64.7 | 67.4 | 68.4 | 69.1 | 68.7 | 66.3 | 64.0 | 63.3 | 66.4 | 68.6 | 69.3 | 68.7 | 69.3 | – | – |
4 | 60.6 | 59.8 | 59.7 | 60.2 | 59.6 | 58.5 | 58.2 | 57.6 | 60.0 | 61.4 | 61.2 | 60.2 | 56.7 | 55.5 | 56.5 | 59.9 | 61.6 | 61.9 | 61.5 | – | – | – |
5 | 54.3 | 54.1 | 53.4 | 53.0 | 53.0 | 52.7 | 52.8 | 52.3 | 54.8 | 55.3 | 54.5 | 52.6 | 49.8 | 50.2 | 51.7 | 54.8 | 56.0 | 56.3 | – | – | – | – |
6 | 49.6 | 48.8 | 48.1 | 47.6 | 48.1 | 48.2 | 48.2 | 48.1 | 50.1 | 50.0 | 48.4 | 46.8 | 45.4 | 46.4 | 47.8 | 50.1 | 51.4 | – | – | – | – | – |
7 | 45.2 | 44.4 | 43.9 | 43.7 | 44.4 | 44.4 | 44.7 | 44.2 | 45.9 | 44.8 | 43.7 | 43.2 | 42.3 | 43.1 | 44.2 | 46.3 | – | – | – | – | – | – |
8 | 41.5 | 40.7 | 40.5 | 40.5 | 41.2 | 41.4 | 41.6 | 40.9 | 41.8 | 40.9 | 40.5 | 40.5 | 39.6 | 40.1 | 41.1 | – | – | – | – | – | – | – |
9 | 38.3 | 38.0 | 37.8 | 37.7 | 38.7 | 38.6 | 38.6 | 37.4 | 38.4 | 38.1 | 38.2 | 38.2 | 37.1 | 37.5 | – | – | – | – | – | – | – | – |
10 | 35.7 | 35.7 | 35.4 | 35.6 | 36.2 | 36.1 | 35.5 | 34.5 | 36.1 | 36.0 | 36.1 | 35.9 | 34.9 | – | – | – | – | – | – | – | – | – |
11 | 33.6 | 33.4 | 33.4 | 33.5 | 34.0 | 33.2 | 32.9 | 32.4 | 34.2 | 34.2 | 34.0 | 33.8 | – | – | – | – | – | – | – | – | – | – |
12 | 31.8 | 31.6 | 31.5 | 31.5 | 31.5 | 31.0 | 31.2 | 30.9 | 32.5 | 32.3 | 32.1 | – | – | – | – | – | – | – | – | – | – | – |
13 | 30.3 | 29.9 | 29.7 | 29.3 | 29.5 | 29.4 | 29.8 | 29.5 | 30.8 | 30.8 | – | – | – | – | – | – | – | – | – | – | – | – |
14 | 28.7 | 28.4 | 28.0 | 27.6 | 28.1 | 28.2 | 28.6 | 28.1 | 29.4 | – | – | – | – | – | – | – | – | – | – | – | – | – |
15 | 27.2 | 26.6 | 26.3 | 26.2 | 26.9 | 27.0 | 27.3 | 26.8 | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
16 | 25.5 | 25.1 | 25.1 | 25.1 | 25.7 | 25.8 | 26.3 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
17 | 24.1 | 24.0 | 24.1 | 24.1 | 24.7 | 24.8 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
18 | 23.0 | 23.0 | 23.1 | 23.2 | 23.6 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
19 | 22.0 | 22.2 | 22.2 | 22.2 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
20 | 21.2 | 21.3 | 21.3 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
21 | 20.3 | 20.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
22 | 19.5 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
Note: Dashes indicate not applicable. |
[Chart]
Last Modified Date: April 28, 2016