Year	% of relevant age group
1971	51.7863693237305
1972	55.2781600952148
1973	64.3727569580078
1974	53.5819892883301
1975	62.3990516662598
1976	64.5067901611328
1977	66.6620635986328
1978	66.9631881713867
1979	73.861686706543
1980	75.0519180297852
1981	73.5656433105469
1982	74.5127487182617
1983	69.6853790283203
1984	73.3998794555664
1985	71.9580688476562
1986	72.3817291259766
1987	72.0489883422852
1988	72.949836730957
1989	67.5251998901367
1990	59.7606506347656
1991	55.9474296569824
1992	62.9929008483887
1993	64.0260467529297
1994	54.8208198547363
1996	47.609489440918
1999	29.9693202972412
2001	53.757568359375
2002	56.5019912719727
2003	53.3450889587402
2004	76.6886596679688
2005	67.2498626708984
2006	73.2619476318359
2007	72.2435684204102
2008	67.4908599853516
2009	67.0782470703125
2010	67.9243392944336
2011	74.6774368286133
2012	72.2780990600586
2015	70.3249969482422
2018	65.1859970092773