Year	Percent
1995	4.174
1996	4.156
1997	4.419
1998	3.967
1999	3.849
2000	4.738
2001	5.333
2002	6.06
2003	5.96
2004	8.325
2005	7.656
2006	6.735
2007	7.862
2008	7.777
2009	10.04
2010	8.303