Year	% of cohort
2009	73.4506912231445
2010	81.1116561889648
2011	83.0017623901367
2012	82.8159332275391
2013	86.4117584228516
2014	96.4854431152344
2015	96.6529312133789
2016	98.6141662597656
2017	92.6144332885742
2018	93.5496597290039
2019	93.1863098144531
2020	94.6000213623047
2021	97.3696670532227