Year	Percent
1995	6.332
1996	6.358
1997	7.2
1998	7.831
1999	6.992
2000	8.511
2001	9.782
2002	10.16
2003	10.52
2004	9.952
2005	10.29
2006	9.971
2007	12.68
2008	11.47
2009	13.33
2010	13.46