Year	% of cohort
1975	90.5745086669922
1976	94.695198059082
1977	91.9914703369141
1978	89.1783065795898
1982	91.1494598388672
2000	95.5334930419922
2005	97.8392791748047
2006	97.9664611816406
2007	96.4013137817383
2012	96.7113265991211
2013	92.8771133422852
2016	96.4279022216797
2020	96.254768371582