Year	% of cohort
1994	92.2360687255859
2000	97.447509765625
2001	94.6986618041992
2002	97.789306640625
2003	100
2004	99.3383178710938
2005	98.6736907958984
2006	99.6035003662109
2007	98.9995193481445
2008	98.6704483032227
2009	98.4247894287109
2010	99.766227722168
2011	99.3706588745117
2012	99.1066436767578
2013	98.860710144043
2014	98.8311309814453
2015	98.6318283081055
2016	96.7443389892578
2017	99.5663070678711
2018	99.5527572631836
2019	100