Year	Percent
1995	8.311
1996	8.025
1997	8.362
1998	8.536
1999	9.353
2000	9.209
2001	9.409
2002	8.316
2003	8.308
2004	8.323
2005	8.454
2006	8.454
2007	8.437
2008	8.444
2009	9.525
2010	8.096