Year	Percent
1995	14.34
1996	14.53
1997	13.54
1998	13.29
1999	16.01
2000	15.62
2001	14.96
2002	14.86
2003	7.77
2004	13.52
2005	14.48
2006	11.06
2007	12.84
2008	13.78
2009	13.86
2010	13.07