Year	% (cumulative)
1971	14.0502595901489
1980	19.4928207397461
2006	74.0626220703125
2007	66.1956100463867
2008	67.371696472168
2009	67.9933319091797
2011	69.7320404052734
2012	70.8069915771484
2013	72.2677612304688
2014	72.3322219848633
2015	73.6172637939453
2016	76.5524673461914
2017	74.1445922851562
2018	74.9173583984375
2019	77.293815612793
2020	78.8771896362305
2021	82.3444213867188
2022	80.4424362182617