Year	Percent
1995	5.812
1996	6.22
1997	6.553
1998	6.597
1999	6.591
2000	6.703
2001	7.232
2002	8.112
2003	8.38
2004	8.85
2005	9.342
2006	9.263
2007	8.652
2008	8.339
2009	8.524
2010	8.647