Year	% of relevant age group
1976	26.8547096252441
1977	26.8734893798828
1978	27.0392208099365
1979	27.0851097106934
1980	27.439079284668
1981	27.7133598327637
1982	27.4607906341553
1983	27.6938991546631
1984	27.8803291320801
1985	27.9719200134277
1986	27.877649307251
1987	27.7692699432373
1988	27.9862804412842
1989	27.8394908905029
1990	27.7938098907471
1991	27.7547607421875
1992	27.5950202941895
1993	27.983549118042
1994	28.0279006958008
1995	28.857400894165
1996	28.9609909057617
1997	28.9572792053223
1998	29.386100769043
1999	29.7466907501221
2000	30.7532005310059
2001	31.6109409332275
2002	32.4664611816406
2003	32.937141418457
2004	34.0695915222168
2005	34.5006217956543
2006	35.7571983337402
2007	37.1924285888672
2008	38.8312110900879
2009	39.9303588867188
2010	40.6893005371094
2011	41.9100799560547
2012	43.1955108642578
2013	44.233699798584
2014	45.970760345459
2015	46.3993797302246
2016	46.7022399902344
2017	47.026439666748
2018	48.0427284240723
2019	47.7320899963379
2020	47.697639465332