Year	Percent
1995	5.918
1996	5.435
1997	10
1998	15
1999	12.37
2000	11.19
2001	14
2002	18.21
2003	23.81
2004	28.57
2005	18.52
2006	18.52
2007	18.52
2008	9.336
2009	9.247
2010	9.759