Year	% of total
1990	99.9993926307468
1995	99.9994042450627
2000	100
2005	100
2010	100
2011	100
2012	100
2013	100
2014	99.9991319914326
2015	99.994291279296
2016	99.9827603540383
2017	99.9828939121544