Year	Percent
1995	5.19
1996	5.294
1997	5.539
1998	5.817
1999	6.05
2000	6.115
2001	6.327
2002	6.495
2003	6.315
2004	6.059
2005	7.951
2006	7.633
2007	10.4
2008	10.8
2009	12.13
2010	10.63