Year	Percent
1995	5.125
1996	7.491
1997	7.99
1998	6.548
1999	6.294
2000	6.939
2001	7.816
2002	8.723
2003	8.485
2004	8.531
2005	8.599
2006	8.394
2007	8.167
2008	8.993
2009	10.19
2010	10.13