Year	Percent
1995	13.76
1996	16.38
1997	14.62
1998	14.91
1999	13.8
2000	12.61
2001	12.71
2002	11.75
2003	13.26
2004	15.18
2005	12.1
2006	12.43
2007	10.06
2008	8.431
2009	11.95
2010	13.65