Year	% of working-age population
1960	6.151852776634296
1961	6.215231535142927
1962	6.28854719190043
1963	6.382951247308287
1964	6.492369716543835
1965	6.591249124091739
1966	6.674323277029235
1967	6.749435042973529
1968	6.818709955847691
1969	6.881130087694568
1970	6.936025168895769
1971	6.981829213496009
1972	7.018341542822661
1973	7.0453476894482
1974	7.013569837225912
1975	6.924417238102051
1976	6.81670206617717
1977	6.690612993545608
1978	6.556391769085154
1979	6.424568826806132
1980	6.301290661338567
1981	6.183272364235105
1982	6.069889933226627
1983	5.967521196341545
1984	5.880788579714366
1985	5.715528658561935
1986	5.47509747937817
1987	5.245582959784632
1988	5.028491535760949
1989	4.825017296250174
1990	4.637112390591516
1991	4.465498092616737
1992	4.3113040565316
1993	4.182285617385628
1994	4.141938654326549
1995	4.1642914787866365
1996	4.171587435450325
1997	4.162191294616823
1998	4.138937133013324
1999	4.105205955874362
2000	4.058420795643808
2001	3.9959133644288984
2002	3.913077710416503
2003	3.816468834832597
2004	3.7810630791023274
2005	3.804450250370322
2006	3.8168368334820553
2007	3.8089618457093737
2008	3.7799947871319803
2009	3.734572856848827
2010	3.5848405207517775
2011	3.4133195634218745
2012	3.3224354555090216
2013	3.2931379835626418
2014	3.3261341523891375
2015	3.368596502192276
2016	3.3653329404333894
2017	3.3671654984013957
2018	3.435303516242738
2019	3.594365549072552
2020	3.8496097394379425
2021	3.962257336626683
2022	3.9288577453672695
2023	3.996722670232342