Year	% (cumulative)
1970	69.8618469238281
1981	49.2873115539551
1986	50.7000007629395
2004	84.2258834838867
2005	83.4783935546875
2006	84.3269577026367
2007	84.6617431640625
2008	85.2227020263672
2009	85.348030090332
2010	86.0695419311523
2011	86.4073867797852
2012	87.1545104980469
2013	97.2946166992188
2014	88.449951171875
2015	88.8346481323242
2016	89.6412963867188
2017	90.7325592041016
2018	90.6152420043945
2019	91.9777526855469
2020	91.9943466186523
2021	93.1941452026367
2022	93.590705871582