Year	Percent
1995	7.806
1996	7.016
1997	10.34
1998	10.52
1999	10.68
2000	10.49
2001	11.97
2002	12.64
2003	13.91
2004	13.67
2005	12.89
2006	12.42
2007	14.76
2008	14.79
2009	16.37
2010	18.19