Year	% of cohort
1983	44.7056007385254
1991	62.0813484191895
1992	58.1016387939453
1993	56.4925498962402
1994	54.0437202453613
1995	57.9808082580566
1996	56.9204216003418
1997	56.327808380127
2005	80.4877700805664
2007	75.4928207397461
2008	74.4180068969727
2009	79.3010711669922
2010	77.0200805664062
2011	72.1737670898438
2012	73.5137329101562
2013	81.4448394775391
2015	85.2963790893555
2016	85.9827728271484
2019	79.324951171875
2020	74.8815231323242
2021	93.4061126708984