Year	% (cumulative)
1970	21.018030166626
2009	82.7153778076172
2010	81.7433471679688
2011	81.6319427490234
2012	82.4815521240234
2014	84.6438522338867
2015	85.1900100708008
2016	84.5369110107422
2017	84.8302459716797
2018	85.681770324707
2019	86.6450271606445
2020	86.8700637817383
2021	84.5627288818359
2022	83.9166259765625