Year	Percent
1995	6.064
1996	6.437
1997	5.784
1998	5.655
1999	5.754
2000	5.499
2001	5.505
2002	5.629
2003	5.819
2004	7.211
2005	7.045
2006	7.348
2007	7.755
2008	8.01
2009	9.137
2010	8.79