Year	% of relevant age group
1974	36.7114181518555
1975	38.2943687438965
1976	39.1081695556641
1977	40.4353218078613
1978	43.9579010009766
1979	44.9405212402344
1980	45.6747398376465
1981	45.7604103088379
1982	45.6499099731445
1983	46.2075309753418
1984	47.5615081787109
1985	49.3101081848145
1986	51.4263801574707
1987	51.8050689697266
1988	54.6427993774414
1989	56.0570297241211
1990	56.8668594360352
1991	56.4208488464355
1992	57.9611015319824
1993	59.0774383544922
1994	60.792350769043
1995	61.3197898864746
1996	61.9183006286621
1997	61.5978202819824
1998	62.1181488037109
1999	62.6315498352051
2000	63.3927688598633
2001	65.0031585693359
2002	67.0101776123047
2003	68.8230514526367
2004	68.2359390258789
2005	68.2743988037109
2006	65.6104888916016
2007	65.027961730957
2008	64.5802993774414
2009	66.3718414306641
2010	66.0204162597656
2011	68.1948318481445
2012	72.4874267578125
2013	69.573371887207
2014	67.9790191650391
2015	67.419319152832
2016	67.1219177246094
2017	66.1766510009766
2018	66.4639205932617
2019	67.3974914550781
2020	67.8886489868164
2021	71.3369522094727
2022	69.3551330566406