Year	Percent
1996	0.1795
1997	0.33987
1998	0.76172
1999	1.74455
2000	0.69737
2001	0.7241
2002	0.69956
2003	0.95997
2004	0.99178
2005	4.2227
2006	6.16741
2007	1.31431
2008	3.46962
2009	0.76465
2010	0.89351
2011	0.53015
2012	0.44327
2013	0.51333
2014	0.12035
2015	1.48735
2016	0.64775