Year	% (cumulative)
1970	74.1244201660156
1978	87.8887710571289
1988	94.8783721923828
2002	97.9990310668945
2006	99.0055541992188
2007	99.1328659057617
2008	99.2014465332031
2009	99.1955108642578
2010	99.1538925170898
2011	99.2129669189453
2012	99.3493576049805
2013	99.3467102050781
2014	99.4007797241211
2015	99.0937194824219
2016	99.53369140625
2017	99.1122436523438
2018	99.1134338378906
2019	99.0744323730469
2020	99.4792861938477
2021	98.9520492553711
2022	98.9876174926758