Year	Percent
1995	10.82
1996	6.984
1997	10.82
1998	6.709
1999	8.656
2000	12.7
2001	42.38
2002	41.19
2003	35.46
2004	35.51
2005	38.29
2006	23.47
2007	19.31
2008	9.901
2009	7.765
2010	4.707