Year | Percent |
---|---|
1990 | 0.46% |
1991 | 0.47% |
1992 | 0.52% |
1993 | 0.56% |
1994 | 0.64% |
1995 | 0.75% |
1996 | 0.82% |
1997 | 0.85% |
1998 | 0.89% |
1999 | 0.90% |
2000 | 1.01% |
2001 | 1.39% |
2002 | 1.38% |
2003 | 1.43% |
2004 | 1.50% |
2005 | 1.48% |
2006 | 1.48% |
2007 | 1.44% |
2008 | 1.42% |
2009 | 1.45% |
2010 | 1.37% |
2011 | 1.41% |
2012 | 1.40% |
2013 | 1.40% |
2014 | 1.43% |
2015 | 1.42% |