Year	% of working-age population
1960	42.85004867470651
1961	43.00328524826777
1962	43.165245851498675
1963	43.372161384453754
1964	43.61996074331197
1965	43.82497114719007
1966	43.96387407094703
1967	44.03531643458444
1968	44.037320792972295
1969	43.97700078478899
1970	43.84850575415773
1971	43.692783059052616
1972	43.55659024382862
1973	43.44256308674731
1974	43.406385509549196
1975	43.468406399959356
1976	43.587958341788934
1977	43.67755823694521
1978	43.671907413473086
1979	43.58291314896526
1980	43.40330765026168
1981	43.1782115305157
1982	42.95692240966546
1983	42.72716984314927
1984	42.50014198898165
1985	42.33364499846103
1986	42.17625530976471
1987	41.919109159111834
1988	41.633888832725475
1989	41.32281309747743
1990	40.8706114358115
1991	40.358999708480674
1992	39.932354906157286
1993	39.60110823838234
1994	39.3846885818315
1995	39.32224284580311
1996	39.314261913139774
1997	39.28548085338927
1998	39.225446442772764
1999	39.11495444489448
2000	38.95178728587831
2001	38.752042519291265
2002	38.58467436473957
2003	38.35121791304289
2004	37.975215463173456
2005	37.61602850487557
2006	37.253238460135016
2007	36.80785715857124
2008	36.32637555982085
2009	35.797299242696894
2010	35.226121827846164
2011	34.66694691823145
2012	34.14853276206064
2013	33.69496620196588
2014	33.298543189599066
2015	32.972069461294105
2016	32.68044383953409
2017	32.28819403745874
2018	31.778989293218462
2019	31.19176916196309
2020	30.520029654579893
2021	29.854495913539452
2022	29.236929002744823
2023	28.633618002756705