Year	% (cumulative)
1982	57.597770690918
1990	80.3662261962891
2001	73.1100006103516
2003	72.7799987792969
2005	74.3399963378906
2006	74.5599975585938
2007	74.6100006103516
2008	74.9899978637695
2009	74.7399978637695
2010	75.2699966430664
2011	76.8399963378906
2012	77.4700012207031
2013	79.25
2014	81.1100006103516
2015	82.6600036621094
2016	82.8600006103516
2017	82.870002746582
2018	82.5699996948242
2019	82.9400024414062
2020	83.3399963378906
2021	83.9800033569336
2022	83.8199996948242