Year	Percent
1995	7.091
1996	7.713
1997	7.978
1998	8.227
1999	9.225
2000	9.715
2001	11.61
2002	11.19
2003	9.399
2004	10.59
2005	11.27
2006	12.06
2007	12.28
2008	11.86
2009	12.17
2010	12.36