Year	Percent
1996	0.41
1997	0.39
1998	3.264
1999	3.179
2000	1.137
2001	1.741
2002	2.858
2003	45.37
2004	72.18
2005	67.35
2006	63.81
2007	69.48
2008	74.63
2009	78.07
2010	81.18