Year Percent of Working-Age Population 1960-01-01 18.0680010224959 1961-01-01 18.2812511224593 1962-01-01 18.4409258472843 1963-01-01 18.5747851506180 1964-01-01 18.7222050559912 1965-01-01 18.9084514764167 1966-01-01 19.2830440247668 1967-01-01 19.6684384159828 1968-01-01 20.0529201495794 1969-01-01 20.4168919977307 1970-01-01 20.7504917400796 1971-01-01 21.2076563799979 1972-01-01 21.6144066462428 1973-01-01 21.9689635286061 1974-01-01 22.2687724640451 1975-01-01 22.5131696425393 1976-01-01 22.8520113156174 1977-01-01 23.1237679116185 1978-01-01 23.3141888330710 1979-01-01 23.4002911944159 1980-01-01 23.3777975078674 1981-01-01 23.4137071915124 1982-01-01 23.3309788484280 1983-01-01 23.1958082261445 1984-01-01 23.0957061271574 1985-01-01 23.0792261205903 1986-01-01 23.2740799640954 1987-01-01 23.5239246878987 1988-01-01 23.7910356986642 1989-01-01 24.0167888390260 1990-01-01 24.1697675293143 1991-01-01 24.3742166751620 1992-01-01 24.5080283074527 1993-01-01 24.5824858124326 1994-01-01 24.6105136322132 1995-01-01 24.6014624996480 1996-01-01 24.6270550011549 1997-01-01 24.6065558917304 1998-01-01 24.5560290750480 1999-01-01 24.4907791975890 2000-01-01 24.4220688465274 2001-01-01 24.4226568299521 2002-01-01 24.4025174756098 2003-01-01 24.3727627506255 2004-01-01 24.3418805852297 2005-01-01 24.3197159031981 2006-01-01 24.4142712226664 2007-01-01 24.5018619431485 2008-01-01 24.6270414985308 2009-01-01 24.8476974770208 2010-01-01 25.1944495135975 2011-01-01 25.7119069226525 2012-01-01 26.3328005012867 2013-01-01 27.0045992703592 2014-01-01 27.6393820755612 2015-01-01 28.1854749029746 2016-01-01 28.6587305105706 2017-01-01 29.0367909095512