Year	Percent
1995	7.445
1996	7.463
1997	7.334
1998	7.319
1999	7.316
2000	7.215
2001	7.242
2002	7.25
2003	8.172
2004	8.206
2005	8.282
2006	8.346
2007	8.483
2008	8.96
2009	9.566
2010	9.539