Year	% (cumulative)
1970	38.971851348877
1975	47.7203216552734
1980	55.3120803833008
2000	80.7399368286133
2004	83.5945816040039
2010	83.2881698608398
2013	85.7940292358398
2017	85.7535934448242
2019	84.530891418457
2020	87.2799987792969
2021	87.9263000488281
2022	87.2008438110352