Year	% of cohort
1974	41.2016487121582
1980	52.76416015625
1981	60.7210502624512
2010	75.7255783081055
2011	65.994010925293
2012	77.2029495239258
2013	68.9399032592773
2014	78.0594863891602
2015	81.1672897338867
2016	72.1294937133789
2017	60.5265884399414
2018	76.5760116577148