Year	% (cumulative)
1970	15.8892602920532
1980	30.5658798217773
1990	40.8641014099121
2001	55.0740013122559
2005	63.5524215698242
2009	74.5380096435547
2010	75.6911087036133
2011	76.6575622558594
2012	77.6319808959961
2013	78.487419128418
2014	74.1223602294922
2015	75.0991821289062
2016	76.0597763061523
2017	76.9970626831055
2018	78.1045227050781
2019	78.5931243896484
2020	80.0114974975586
2021	81.4102630615234
2022	82.6402359008789