Year	% of total
1990	100
1995	100
2000	100
2005	89.0874040556649
2010	90.341885439457
2011	90.3729620938298
2012	90.6872671206908
2013	99.9999999999736
2014	99.9999999999744
2015	92.5294203036431
2016	99.9745367877486
2017	100