Year	Percent
1995	5.262
1996	6.336
1997	6.475
1998	6.1
1999	7.185
2000	7.027
2001	7.241
2002	7.322
2003	7.643
2004	9.231
2005	9.785
2006	9.055
2007	8.462
2008	8.206
2009	8.423
2010	8.423