Year	% (cumulative)
1980	22.9465007781982
2009	96.6686782836914
2010	96.6526870727539
2011	96.7751922607422
2012	97.0276031494141
2014	97.6135864257812
2015	97.4632110595703
2016	97.3591995239258
2017	97.5676116943359
2018	97.5210266113281
2019	97.5334167480469
2020	97.6061019897461
2021	98.1810302734375
2022	98.2827911376953