Year	% (cumulative)
1972	21.7207508087158
1990	32.0999984741211
2000	43.2504386901855
2011	63.345531463623
2012	89.9203948974609
2013	90.6336212158203
2014	91.6658020019531
2015	92.1715393066406
2016	92.1533737182617
2017	92.4957962036133
2018	92.6013031005859
2019	92.7291641235352
2020	98.3948135375977
2021	93.4451675415039
2022	95.5923690795898