Year	% (cumulative)
1980	18
1990	36.0336990356445
1995	58.0867881774902
2005	70.7687835693359
2006	71.8799285888672
2007	73.01171875
2008	74.9487991333008
2009	74.7969131469727
2010	76.1983413696289
2011	76.699592590332
2012	77.39111328125
2013	78.1344833374023
2014	78.5876312255859
2015	79.3682479858398
2016	79.6072387695312
2017	80.0077285766602
2018	81.4235610961914
2019	82.1780471801758
2020	83.0585403442383
2021	85.5931167602539
2022	86.0898666381836