Year	% (cumulative)
1980	19.4386806488037
2009	95.9206314086914
2010	95.9662017822266
2011	96.054557800293
2012	96.2765808105469
2014	97.0206527709961
2015	97.0939331054688
2016	96.8901824951172
2017	96.9631195068359
2018	97.0852584838867
2019	97.1908187866211
2020	97.2358551025391
2021	97.9603500366211
2022	98.0753860473633