Year	% of cohort
1995	97.2624282836914
1998	97.5288009643555
1999	99.4584503173828
2000	98.2855377197266
2001	99.0501708984375
2002	98.806640625
2003	98.6309967041016
2004	99.0385665893555
2005	96.9934616088867
2006	97.8640289306641
2007	97.7236175537109
2008	98.8255996704102
2009	97.9199295043945
2010	97.7206497192383
2011	97.2433090209961
2012	97.2158279418945
2013	97.9654769897461
2014	98.6525573730469
2015	99.1897506713867
2016	99.7458419799805
2017	99.7671813964844
2018	99.9305419921875
2019	99.6509780883789
2020	99.6400299072266
2021	99.7968978881836