Year	% of relevant age group
1970	28.5389099121094
1971	28.5337505340576
1972	29.5143699645996
1973	29.9260692596436
1974	29.8937301635742
1975	30.9615707397461
1976	31.7661399841309
1977	32.9931182861328
1978	35.7791900634766
1979	36.6056213378906
1980	37.3957214355469
1981	37.836368560791
1982	38.1276702880859
1983	38.9036102294922
1984	40.1806907653809
1985	41.9980010986328
1986	44.0200996398926
1987	44.7872009277344
1988	47.1989593505859
1989	48.745548248291
1990	50.1622695922852
1991	50.3729591369629
1992	52.0535316467285
1993	53.5045394897461
1994	55.8467292785645
1995	56.7965087890625
1996	57.7145118713379
1997	58.0797500610352
1998	59.1064796447754
1999	60.1306915283203
2000	61.2398910522461
2001	62.636791229248
2002	64.6034622192383
2003	66.5365982055664
2004	66.5175399780273
2005	67.0664367675781
2006	65.3730316162109
2007	65.5151977539062
2008	65.3876419067383
2009	67.2216186523438
2010	66.3990020751953
2011	68.5880966186523
2012	73.2962493896484
2013	69.2375030517578
2014	67.8633499145508
2015	67.630859375
2016	67.5759124755859
2017	66.9270782470703
2018	67.3636779785156
2019	68.3170700073242
2020	68.9260101318359
2021	71.8605117797852
2022	70.9395294189453