Year	% (cumulative)
1972	41.382209777832
1990	46.3194618225098
2000	55.3517112731934
2011	70.8312911987305
2012	96.6276245117188
2013	96.6383743286133
2014	96.9840240478516
2015	97.4795761108398
2016	97.7493591308594
2017	97.4297180175781
2018	97.3570938110352
2019	97.8280944824219
2020	99.1843566894531
2021	97.4571151733398
2022	98.7349014282227