Year	% (cumulative)
1971	34.6442794799805
1976	37.6501197814941
1981	45.2974090576172
1986	53.1757888793945
1991	59.9359588623047
1996	66.7444229125977
2006	75.6034774780273
2008	76.3725280761719
2009	77.0282821655273
2010	77.7531127929688
2011	79.2001266479492
2014	80.8991928100586
2015	81.8309326171875
2017	82.9151077270508
2019	83.3681411743164
2022	84.0678024291992