Year	% of total
1990	100
1995	100
2000	99.999996120588
2005	99.999996861798
2010	99.9999974253327
2011	99.9999975448802
2012	99.999992994816
2013	99.9999905399797
2014	99.9999584481301
2015	99.9999551645374
2016	99.9982986494764
2017	99.9982944622564