Year	% of total
1990	68.5257799093445
1995	71.5228139345346
2000	79.9057709261798
2005	2.48220345056344E-09
2010	0
2011	1.95118173456071
2012	9.56947793155256
2013	2.22779362431871
2014	2.38179875637998
2015	84.5646521290641
2016	13.5130633947359
2017	29.9975815990136