Year Percent of Working-Age Population 1960-01-01 10.5716434237224 1961-01-01 10.8236065794342 1962-01-01 11.0965813765611 1963-01-01 11.3799122029690 1964-01-01 11.6599511308886 1965-01-01 11.9333025323604 1966-01-01 12.3377830221410 1967-01-01 12.7094508014686 1968-01-01 13.0686163321536 1969-01-01 13.4447445786008 1970-01-01 13.8542337594196 1971-01-01 14.3631214415291 1972-01-01 14.8876771865136 1973-01-01 15.4043957866799 1974-01-01 15.8752790389020 1975-01-01 16.2772561786497 1976-01-01 16.6525722942589 1977-01-01 16.9713263535180 1978-01-01 17.2044764993592 1979-01-01 17.2996528946168 1980-01-01 17.2335866595891 1981-01-01 16.9895451719478 1982-01-01 16.5860018148399 1983-01-01 16.1292966510088 1984-01-01 15.7574400508377 1985-01-01 15.5468563523376 1986-01-01 15.6377878763634 1987-01-01 15.8526140398697 1988-01-01 16.1598634400183 1989-01-01 16.5076954074596 1990-01-01 16.8655892527243 1991-01-01 17.5082012223156 1992-01-01 18.1573410100697 1993-01-01 18.8137156424648 1994-01-01 19.4820042284982 1995-01-01 20.1634615991467 1996-01-01 20.8318749002629 1997-01-01 21.4687386350841 1998-01-01 22.0752588642804 1999-01-01 22.6507743892182 2000-01-01 23.1934214787668 2001-01-01 23.8764170713438 2002-01-01 24.5310552100110 2003-01-01 25.1060456991474 2004-01-01 25.5200564110742 2005-01-01 25.7341871390366 2006-01-01 25.9339854990302 2007-01-01 25.9662500138452 2008-01-01 25.9354455468165 2009-01-01 25.9879021736020 2010-01-01 26.2101011083880 2011-01-01 26.5079765205805 2012-01-01 26.9041271982046 2013-01-01 27.3857080701586 2014-01-01 27.9199975027597 2015-01-01 28.4862019701269 2016-01-01 29.2565460611099 2017-01-01 30.0731984666276