Year	% of cohort
1995	80.8291473388672
2000	86.1145782470703
2003	88.7250289916992
2006	92.6314086914062
2007	93.5049591064453
2008	93.189697265625
2009	95.0656661987305
2010	97.8377990722656
2011	98.4688186645508
2012	97.6190872192383
2013	98.3262481689453
2014	95.1202163696289
2015	88.6568603515625
2016	92.7326736450195
2017	91.6376495361328
2018	89.4171981811523
2019	88.8719787597656
2020	91.8126983642578
2021	91.174186706543