Year	% (cumulative)
1972	46.0365791320801
1982	59.7000007629395
1983	47.0999984741211
2004	95.0468673706055
2006	75.345329284668
2007	84.3585891723633
2009	84.8177032470703
2010	85.1100463867188
2011	85.7394104003906
2012	86.1581115722656
2013	88.427131652832
2014	88.8317489624023
2015	89.1813583374023
2016	90.6889190673828
2017	90.6557388305664
2018	90.3507080078125
2019	90.8713226318359
2020	91.6396026611328
2021	91.5347671508789
2022	91.6876525878906