Year	Percent
1995	7.936
1996	5.531
1997	6.503
1998	5.796
1999	7.056
2000	6.517
2001	30.57
2002	9.684
2003	13.06
2004	12.41
2005	11.29
2006	14.88
2007	14.62
2008	14.97
2009	15.82
2010	15.81