Year	% (cumulative)
1975	3.70000004768372
1980	5.5
1984	8.29191970825195
2008	29.9093399047852
2010	32.833381652832
2011	34.0658302307129
2012	33.3407287597656
2016	39.334789276123
2018	38.4471702575684
2019	38.8616981506348