Year	% of cohort
1970	21.9744701385498
1971	31.5241298675537
1972	41.3815689086914
1973	58.7751884460449
1974	39.6607398986816
1975	34.1153793334961
1976	31.2279396057129
1977	34.3357086181641
1978	37.3151702880859
1979	40.2732086181641
1980	48.6532287597656
1981	50.6778793334961
1982	45.7905006408691
1983	44.6987991333008
1984	51.6580085754395
1985	46.2965888977051
1986	52.8795509338379
1987	53.2306213378906
1988	45.6831283569336
1989	50.9091682434082
1990	56.8020286560059
1991	51.5746917724609
1992	46.726921081543
1993	67.9614028930664
1994	63.8321189880371
1995	49.9537887573242
1996	54.9838600158691
1997	60.7277793884277
1998	54.1510696411133
1999	59.6673583984375
2000	55.0299797058105
2001	58.9946708679199
2002	67.2267303466797
2003	57.0971298217773
2004	61.2707595825195
2005	63.1182594299316
2006	46.3931312561035
2007	65.2390518188477
2008	59.3718490600586
2009	69.2980728149414
2010	63.8545303344727
2011	63.9021492004395
2012	56.7543716430664
2013	67.3594818115234
2014	64.8559722900391
2015	69.2823867797852
2022	69.9078521728516