Year	Percent of Working-Age Population
1960-01-01	18.5196085788113
1961-01-01	18.9231352937523
1962-01-01	19.3325896262601
1963-01-01	19.7501587469860
1964-01-01	20.1756883836729
1965-01-01	20.6090616585751
1966-01-01	21.1139004855911
1967-01-01	21.5943172780780
1968-01-01	22.0376226858609
1969-01-01	22.4227470752394
1970-01-01	22.7370767160537
1971-01-01	23.1265044804314
1972-01-01	23.4117739931418
1973-01-01	23.6045061692625
1974-01-01	23.7206665562456
1975-01-01	23.7683594165868
1976-01-01	23.9824733448964
1977-01-01	24.1417244468596
1978-01-01	24.1888660271148
1979-01-01	24.0328495654836
1980-01-01	23.6381357233154
1981-01-01	23.1985678570477
1982-01-01	22.5353462130155
1983-01-01	21.8043275840545
1984-01-01	21.2121021330213
1985-01-01	20.8670131217269
1986-01-01	20.8697963976339
1987-01-01	21.0677951452476
1988-01-01	21.3796665798677
1989-01-01	21.6799672088875
1990-01-01	21.8956152694877
1991-01-01	22.1876711676425
1992-01-01	22.4119485581889
1993-01-01	22.5666033501814
1994-01-01	22.6455973422445
1995-01-01	22.6400828545438
1996-01-01	22.7336710419398
1997-01-01	22.7390320851320
1998-01-01	22.6992838311408
1999-01-01	22.6746250964682
2000-01-01	22.7046805297879
2001-01-01	22.8650021671199
2002-01-01	23.0489499581426
2003-01-01	23.2702797184402
2004-01-01	23.5439762068771
2005-01-01	23.8789667536999
2006-01-01	24.3400598942639
2007-01-01	24.8563498606913
2008-01-01	25.3959839882688
2009-01-01	25.9104978679831
2010-01-01	26.3738609885580
2011-01-01	26.7748989210945
2012-01-01	27.1296382237027
2013-01-01	27.4594186326622
2014-01-01	27.7810263134877
2015-01-01	28.1035279952958
2016-01-01	28.4517297393235
2017-01-01	28.7849528312483