Year	Percent
1995	9.414
1996	9.057
1997	11.23
1998	9.351
1999	11.48
2000	13.25
2001	14.26
2002	14.51
2003	29.06
2004	10.69
2005	12.58
2006	11.51
2007	7.236
2008	9.547
2009	10.51
2010	11.33