Year	Percent
1995	10.63
1996	11.33
1997	11.36
1998	11.84
1999	12.09
2000	12.6
2001	13.18
2002	13.52
2003	13.71
2004	13.65
2005	13.66
2006	13.77
2007	14.24
2008	14.56
2009	14.81
2010	14.81