Year	% of cohort
1971	65.3934097290039
1978	79.6023712158203
1982	78.807373046875
1983	76.6275100708008
1984	74.7150497436523
1987	76.6817398071289
1988	74.6205673217773
1989	77.6941299438477
1995	73.0058898925781
1996	73.9810409545898
1997	79.685676574707
2000	58.7794303894043
2001	55.6267700195312
2002	68.3678436279297
2003	71.4469223022461
2004	61.5586814880371
2005	53.143871307373
2007	59.5198516845703
2008	58.792839050293
2009	61.0578498840332
2010	59.5723609924316
2011	63.7393989562988
2012	58.3894996643066
2013	67.8886032104492
2014	60.273509979248
2019	73.4786224365234
2020	65.7447509765625
2021	60.8560218811035