Year Percent of Working-Age Population 1960-01-01 14.2279724903417 1961-01-01 14.4014324935149 1962-01-01 14.5624250867645 1963-01-01 14.7056082501710 1964-01-01 14.8401731490062 1965-01-01 14.9730337155931 1966-01-01 15.1762596676272 1967-01-01 15.3651380275906 1968-01-01 15.5533236621484 1969-01-01 15.7294552768650 1970-01-01 15.9118431134075 1971-01-01 16.1405924028886 1972-01-01 16.3535127491951 1973-01-01 16.5571454548785 1974-01-01 16.7384701688093 1975-01-01 16.9056847414769 1976-01-01 17.1677653766095 1977-01-01 17.4162473784370 1978-01-01 17.6321901868446 1979-01-01 17.7772548939434 1980-01-01 17.8313621597273 1981-01-01 17.8349318226127 1982-01-01 17.7477216892184 1983-01-01 17.6332918689149 1984-01-01 17.5741827282030 1985-01-01 17.6124969961251 1986-01-01 17.7825166892160 1987-01-01 18.0227500395868 1988-01-01 18.3076347873633 1989-01-01 18.5955959173787 1990-01-01 18.8625898310209 1991-01-01 19.1466348955591 1992-01-01 19.4125004651259 1993-01-01 19.6582603899846 1994-01-01 19.8820405229074 1995-01-01 20.0842470797330 1996-01-01 20.3206921557303 1997-01-01 20.5308182551657 1998-01-01 20.7292255765985 1999-01-01 20.9304983308272 2000-01-01 21.1449676185188 2001-01-01 21.3842167333844 2002-01-01 21.6400966369887 2003-01-01 21.9068214063893 2004-01-01 22.1694788360263 2005-01-01 22.4243564082671 2006-01-01 22.7214109180131 2007-01-01 23.0220873166330 2008-01-01 23.3418648901271 2009-01-01 23.7209851220749 2010-01-01 24.1891011036189 2011-01-01 24.7312894264412 2012-01-01 25.3517987759975 2013-01-01 26.0669812175534 2014-01-01 26.7993198981611