Year	% of cohort
1983	76.047981262207
1998	78.3577423095703
2001	61.3633995056152
2002	71.1608123779297
2012	84.7105712890625
2015	89.9149169921875
2016	90.2851791381836
2017	92.0858306884766
2018	94.4526290893555
2019	95.0986022949219