Year	Percent
1995	10.37
1996	13.27
1997	15.54
1998	13.28
1999	9.756
2000	9.377
2001	10.51
2002	13.61
2003	13.25
2004	14.23
2005	14.74
2006	16.38
2007	13.39
2008	15.29
2009	15.68
2010	15.64