Year	% (cumulative)
1970	41.8390312194824
1975	49.9665489196777
1980	56.956958770752
2000	80.1521987915039
2004	81.7367935180664
2010	82.061279296875
2013	84.156982421875
2017	84.0412979125977
2019	82.3941421508789
2020	85.4061889648438
2021	85.7820281982422
2022	85.706413269043