Year	% of cohort
1975	38.1633987426758
1977	68.9883270263672
1978	76.0337600708008
1981	92.4307632446289
1982	83.3236083984375
1983	81.2888107299805
1984	74.8095626831055
1987	82.837287902832
2005	80.9356536865234
2006	79.8105316162109
2008	94.0604934692383
2009	81.5871505737305
2010	88.7649612426758
2011	95.8456573486328
2012	93.146858215332
2013	91.0050964355469
2014	96.8470764160156
2015	95.5063934326172
2016	73.1890029907227
2017	87.7372589111328
2018	93.1007690429688
2019	91.2903366088867
2020	78.016487121582
