Year	Percent
1990	0
1991	0
1992	0
1993	0.744
1994	1.618
1995	9.069
1996	4.229
2008	2.9624
2009	7.2763
2010	3.2368
2011	4.4902
2012	4.3296
2014	2.4555
2015	4.3714
2016	2.3002
2017	1.9735