Year	% (cumulative)
1970	39.5855102539062
1974	45.892391204834
1979	53.9517211914062
1986	54.4707489013672
1987	55.6596412658691
1988	56.982738494873
1989	58.3053512573242
1990	59.7593307495117
1991	60.9521598815918
1992	62.947021484375
1993	64.2532806396484
1994	65.2831802368164
1995	66.5806274414062
2004	76.6572265625
2005	77.375846862793
2006	77.9992904663086
2007	78.5984191894531
2008	75.9606399536133
2009	76.5528793334961
2010	77.1283111572266
2011	77.7598419189453
2012	78.3442611694336
2013	75.022331237793
2014	75.3889007568359
2015	75.7631530761719
2016	76.0991287231445
2017	76.520751953125
2018	82.5964736938477
2019	77.3400802612305
2020	83.6087646484375
2021	82.8994903564453
2022	83.2649230957031