Year	% of cohort
1971	31.0612506866455
1975	44.5259704589844
1976	50.2709693908691
1977	55.7505798339844
1987	43.5944786071777
1991	40.0428581237793
1993	44.0601615905762
2007	73.205078125
2009	51.1329917907715
2010	48.5172309875488
2011	65.840202331543
2012	55.0146903991699
2014	60.5060005187988
2020	73.9979629516602