Year	% of working-age population
1960	9.687489882500106
1961	9.861300872916159
1962	9.989678667183915
1963	10.110129877510094
1964	10.25377613500708
1965	10.465368049308422
1966	10.684653380160883
1967	10.880507025026628
1968	11.100933874892226
1969	11.288407063917244
1970	11.415729942275117
1971	11.543990192793101
1972	11.693331371898934
1973	11.813986699084587
1974	11.944432515734105
1975	12.071191952856548
1976	12.185313396302671
1977	12.315296678050546
1978	12.415985828743679
1979	12.437142285206503
1980	12.339334714009736
1981	12.11330770532314
1982	11.82457409008645
1983	11.573024306127724
1984	11.404601449042307
1985	11.272709369043607
1986	11.19740483816081
1987	11.205031866252922
1988	11.284014355580968
1989	11.44341216930577
1990	11.64609131409873
1991	11.8814449783661
1992	12.154840376558743
1993	12.459213931043916
1994	12.732439766805369
1995	12.94043016234305
1996	13.06844983630454
1997	13.116229524314585
1998	13.103299308043443
1999	13.065563060484685
2000	13.08995835523055
2001	13.210946485443428
2002	13.428320967646087
2003	13.666062861411442
2004	13.84527550360056
2005	13.944669672171063
2006	13.964633899885401
2007	13.884911769968879
2008	13.666716719577634
2009	13.408494227455641
2010	13.155157115448027
2011	12.997037515123514
2012	12.985639898228362
2013	13.064339763286112
2014	13.239777621375113
2015	13.485828906400949
2016	13.741784994132011
2017	13.997576719529475
2018	14.337956639712845
2019	14.742482983910545
2020	15.05135254311528
2021	15.27250197111837
2022	15.60905496362441
2023	16.213289223044516