Year	% of total
1990	4.64156380047368
1995	0
2000	2.48578917624871E-11
2005	2.46358351317824E-11
2010	2.41806657771299E-11
2011	2.41029493848674E-11
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0