Year	% (cumulative)
1970	31.0501594543457
1980	28.1286506652832
1985	28.8817501068115
2001	55.588939666748
2002	61.4169502258301
2003	64.0428619384766
2004	64.3937225341797
2005	65.4491577148438
2006	66.3533325195312
2007	67.2861022949219
2008	67.9993133544922
2009	71.9146575927734
2010	72.2415084838867
2011	73.1274108886719
2012	75.330322265625
2013	68.6100845336914
2014	76.5852508544922
2015	77.180908203125
2016	66.3864593505859
2017	72.327880859375
2018	73.3112640380859
2019	81.8046798706055
2020	79.2551422119141
2021	83.9268569946289
2022	77.0862884521484