Year	Percent
1992	1.26702
1993	1.62105
1994	0.81619
1995	0.4823
1996	0.36784
1997	1.17094
1998	0.89226
1999	4.4424
2000	4.16683
2001	0.61553
2002	1.05863
2003	2.28679
2004	1.04603
2005	1.48462
2006	1.62156
2007	0.71614
2008	0.6567
2009	0.62586
2010	0.50462
2011	0.16114
2012	0.13048
2013	0.19224
2014	0.15663
2015	0.15122
2016	0.34352