Year	% of cohort
1993	44.3341217041016
1998	67.001106262207
1999	70.5852737426758
2003	51.8253593444824
2009	74.8375396728516
2011	79.1697998046875
2012	91.1387329101562
2013	78.6015396118164
2015	83.7955780029297
2016	79.0404205322266
2017	79.2866897583008
2018	91.9615325927734
2019	85.1825332641602
2020	56.1984786987305