Year	% (cumulative)
1970	28.1000003814697
1975	32.2999992370605
1980	38.1704711914062
1990	66.0345230102539
2004	70.6149597167969
2005	71.2688980102539
2006	73.2487030029297
2007	73.7688369750977
2008	74.9272384643555
2009	74.8919067382812
2010	75.414192199707
2011	75.9920196533203
2012	80.810661315918
2013	81.2519836425781
2014	77.0060577392578
2015	77.4857177734375
2016	77.8364028930664
2017	78.2241363525391
2018	82.1473999023438
2019	78.7484436035156
2020	82.4527740478516
2021	75.2643356323242
2022	79.070556640625