Year	Percent
1995	10.23
1996	11.63
1997	10.83
1998	13.65
1999	27.61
2000	32.23
2001	30.89
2002	32.67
2003	31.76
2004	33.23
2005	23.04
2006	26.34
2007	23.55
2008	20.97
2009	21.64
2010	21.32