Year	% of relevant age group
1970	38.6914482116699
1971	38.4340591430664
1972	38.1274108886719
1973	39.0597305297852
1974	39.8877410888672
1975	42.1523208618164
1976	43.8737182617188
1977	45.6769104003906
1978	44.572509765625
1979	41.9251594543457
1980	45.9768600463867
1981	49.1043090820312
1982	50.3008193969727
1983	51.6518211364746
1984	53.7834281921387
1985	57.3525314331055
1986	57.0940399169922
1987	57.2236213684082
1988	58.3151893615723
1989	58.8586311340332
1990	60.5270385742188
1991	61.0326690673828
1992	62.0278396606445
1993	62.4593887329102
1994	63.4353981018066
1995	64.6943130493164
1996	66.0268707275391
1997	67.078727722168
1998	68.4541473388672
1999	69.8487091064453
2000	70.0456466674805
2001	71.3197708129883
2002	72.5099105834961
2003	73.982177734375
2004	75.6805801391602
2005	76.3976898193359
2006	75.2619705200195
2007	77.1240386962891
2008	78.5119705200195
2009	77.6030578613281
2010	78.5011596679688
2011	79.0381698608398
2012	80.0674362182617
2013	77.9984664916992
2014	77.8369598388672
2015	77.5547637939453
2016	77.5248870849609
2017	77.7075881958008
2018	78.7158432006836
2019	79.2065200805664
2020	80.3110275268555
2021	80.4364776611328
2022	80.5512619018555