Year	% of cohort
1974	58.8769798278809
1980	61.7915496826172
1981	69.3954925537109
2010	81.9443893432617
2011	74.7776794433594
2012	85.2321624755859
2013	77.8294525146484
2014	80.3620223999023
2015	87.5996627807617
2016	78.65673828125
2017	69.1120529174805
2018	82.7922973632812