Year	% (cumulative)
1972	31.467830657959
1990	39.0999984741211
2000	49.165641784668
2011	66.9835662841797
2012	93.202018737793
2013	93.5517959594727
2014	94.2449722290039
2015	94.7435531616211
2016	94.8660507202148
2017	94.8832550048828
2018	94.900993347168
2019	95.1920013427734
2020	98.8074417114258
2021	95.3714370727539
2022	97.0994567871094