Year	Percent
1995	15.22
1996	14.56
1997	13.93
1998	12.95
1999	11.74
2000	10.86
2001	9.339
2002	9.408
2003	9.676
2004	10.12
2005	9.894
2006	9.9
2007	10.91
2008	11.6
2009	12.07
2010	12.07