Year	% (cumulative)
1970	31.9346294403076
1982	35.1539688110352
2000	69.8199996948242
2003	72.870002746582
2004	76.7298889160156
2006	74.0100021362305
2007	75.2894134521484
2008	76.4626998901367
2009	77.4300003051758
2010	76.6635208129883
2011	77.9100036621094
2012	77.9972915649414
2013	79.9499969482422
2014	79.9904174804688
2015	82.3499984741211
2016	80.8501358032227
2017	83.3000030517578
2018	82.7781295776367
2019	83.3285751342773
2020	85.9400024414062
2021	88.0690612792969
2022	86.1100006103516