Year	Percent
1995	6.38
1996	6.5
1997	9.109
1998	7.905
1999	8.577
2000	10.24
2001	9.62
2002	11.33
2003	11.72
2004	10.88
2005	11.36
2006	12.5
2007	15.65
2008	13.71
2009	16.4
2010	15.9