Year	Percent
1995	14.48
1996	13.41
1997	12.07
1998	12.76
1999	12.06
2000	12.12
2001	10.5
2002	16.94
2003	15.22
2004	8.661
2005	15.77
2006	23.21
2007	30.27
2008	40.01
2009	41.6
2010	41.37