Year	% (cumulative)
1980	34.3681716918945
1990	52.5612487792969
2000	63.8600006103516
2002	64.4800033569336
2004	67.5199966430664
2005	70.8923187255859
2006	70.4400024414062
2007	71.8482971191406
2008	70.9800033569336
2009	74.4015884399414
2010	73.5299987792969
2012	75.879997253418
2013	78.1062393188477
2014	77.0299987792969
2015	79.2293930053711
2016	79.2300033569336
2017	81.4155807495117
2018	80.5800018310547
2020	82.120002746582
2022	83.3099975585938