Year	% of cohort
1994	95.8727722167969
1995	90.3622283935547
1996	87.5529327392578
2001	86.5654602050781
2002	88.291389465332
2004	89.3928909301758
2007	83.1278228759766
2016	98.0667419433594
2017	99.0687713623047