Year	% (cumulative)
1970	19.2968997955322
2009	77.0632781982422
2010	76.368522644043
2011	76.4488220214844
2012	77.5454864501953
2014	80.6420822143555
2015	81.6249084472656
2016	80.707763671875
2017	81.1361389160156
2018	82.5237274169922
2019	83.7257232666016
2020	84.0237045288086
2021	81.7420120239258
2022	81.2272262573242