Year	% of cohort
1998	27.2931308746338
2001	62.2792015075684
2002	65.8746566772461
2003	67.2315826416016
2004	77.0101928710938
2007	79.1854705810547
2008	77.3472137451172
2009	79.1069183349609
2010	88.3794174194336
2015	87.8220062255859
2016	95.5225677490234