Year	% (cumulative)
1970	37.8473892211914
2006	79.7918014526367
2007	81.0655212402344
2008	81.7366027832031
2009	82.6720428466797
2010	82.3820495605469
2011	82.8823394775391
2012	83.0889511108398
2013	83.8821716308594
2014	84.6838226318359
2015	86.6733779907227
2016	87.1001205444336
2017	88.3818664550781
2018	89.1042404174805
2019	89.705207824707
2020	90.1621398925781
2021	90.726936340332
2022	90.955207824707