Year	Percent
1994	26.6938
1995	28.59952
1996	30.607
1997	31.60845
1998	25.02681
1999	27.01775
2000	36.92819
2001	32.04551
2002	31.5249
2003	27.58205
2004	26.804
2005	30.76547
2006	40.75039
2007	37.43101
2008	45.25294
2009	35.1429
2010	34.40277
2011	37.18474