Year	Percent
1993	2.64685
1996	2.01089
1997	2.19685
1998	2.32232
1999	2.60759
2000	3.52117
2001	6.68439
2002	3.58699
2003	1.89813
2004	3.42787
2005	1.56403
2006	2.05124
2007	1.22138
2008	0.29661
2009	0.43143
2010	0.37384
2011	0.26888
2012	0.2269