Year	Percent
1995	18.71
1996	17.07
1997	17.61
1998	22.18
1999	22.33
2000	24.04
2001	13.35
2002	10.35
2003	8.316
2004	8.906
2005	9.418
2006	8.252
2007	8.695
2008	9.165
2009	8.891
2010	9.151