Year	Percent
1995	10.98
1996	15.99
1997	9.987
1998	16.47
1999	31.89
2000	25.14
2001	27.7
2002	27.77
2003	25.53
2004	35
2005	25.44
2006	21.69
2007	25.69
2008	30.28
2009	33.94
2010	44.17