Year	Percent
1995	9.053
1996	10.27
1997	9.454
1998	7.689
1999	5.888
2000	6.653
2001	7.113
2002	8.066
2003	8.333
2004	8.485
2005	9.153
2006	10.63
2007	10.88
2008	11.41
2009	12.49
2010	11.68