Year	% of cohort
1960	51.20077237533653
1961	53.54225402541165
1962	56.65281598149218
1963	57.176013032377895
1964	57.92993039665565
1965	57.86520623180081
1966	58.526363126412065
1967	59.120900415168286
1968	59.735202405236336
1969	60.1207880127223
1970	60.472862286194285
1971	60.906637417794215
1972	61.86922123337735
1973	62.64103532224921
1974	63.31652536275083
1975	64.0009876575625
1976	64.67714867710082
1977	65.46586153363654
1978	66.09701126364179
1979	66.78635360062471
1980	67.34282244949772
1981	68.02038894568001
1982	68.59009317632425
1983	69.03040784506388
1984	69.50607978863351
1985	69.91175627375733
1986	70.52621063949681
1987	70.93886210691808
1988	71.24629251220298
1989	71.69398052910168
1990	71.9342520767652
1991	72.03057716585504
1992	72.48071824246274
1993	72.75303787008752
1994	72.96704761418515
1995	73.22059404586442
1996	73.46310258403402
1997	73.92693147975828
1998	74.37511141259856
1999	74.69473434886912
2000	75.13255237259222
2001	75.71111261786109
2002	76.0789138592105
2003	76.49615142950687
2004	76.77121305778465
2005	77.3502701947321
2006	77.88703593310397
2007	78.26616116634082
2008	78.43579037824955
2009	79.01406779311311
2010	79.3696981104709
2011	79.779243034861
2012	80.13043113794528
2013	80.45589150212659
2014	80.72279390508041
2015	80.91906019206854
2016	81.17140395963523
2017	81.4474483039659
2018	81.7053924874891
2019	81.93864549773093
2020	80.7704067170808
2021	79.02892635141149
2022	79.981212023429