Year	Percent
1995	6.512
1996	6.651
1997	6.151
1998	6.259
1999	6.189
2000	6.525
2001	7.133
2002	7.655
2003	7.72
2004	7.693
2005	7.65
2006	7.823
2007	8.384
2008	9.415
2009	10.47
2010	10.94