Year	Percent
1995	13.07
1996	15.06
1997	12.16
1998	9.622
1999	7.934
2000	9.546
2001	10.93
2002	11.8
2003	11.98
2004	11.91
2005	11.28
2006	11.75
2007	11.73
2008	12.97
2009	13.39
2010	13.11