Year Percent of Working-Age Population 1960-01-01 15.6926073741541 1961-01-01 15.7945921155509 1962-01-01 15.8706972202019 1963-01-01 15.9540033381407 1964-01-01 16.0882689177474 1965-01-01 16.2975375681751 1966-01-01 16.6290647674915 1967-01-01 16.9997460200559 1968-01-01 17.3872023543754 1969-01-01 17.7617206112968 1970-01-01 18.1091361401802 1971-01-01 18.4841199287549 1972-01-01 18.7798476038709 1973-01-01 19.0119916024982 1974-01-01 19.2056781422179 1975-01-01 19.3759323688965 1976-01-01 19.6077626580592 1977-01-01 19.8144169948681 1978-01-01 19.9376587393212 1979-01-01 19.8878431005002 1980-01-01 19.6280414939793 1981-01-01 19.3490461490925 1982-01-01 18.8813947253739 1983-01-01 18.3324925206781 1984-01-01 17.8496460412609 1985-01-01 17.5180015919146 1986-01-01 17.4166444898773 1987-01-01 17.4152030263438 1988-01-01 17.4967767417585 1989-01-01 17.6346831619075 1990-01-01 17.8122312332896 1991-01-01 18.4457653588552 1992-01-01 19.1261089336898 1993-01-01 19.8088258079223 1994-01-01 20.4261186097484 1995-01-01 20.9355085691200 1996-01-01 21.3769447734465 1997-01-01 21.6789004813661 1998-01-01 21.8922610062598 1999-01-01 22.0917248380184 2000-01-01 22.3191727429338 2001-01-01 22.8475344430650 2002-01-01 23.3788572678222 2003-01-01 23.8794447789770 2004-01-01 24.3020410226041 2005-01-01 24.6228814913935 2006-01-01 25.1759198727611 2007-01-01 25.6621433908188 2008-01-01 26.0900679923719 2009-01-01 26.4771103268442 2010-01-01 26.8380717491314 2011-01-01 27.3692973572965 2012-01-01 27.8778220061397 2013-01-01 28.3780723253587 2014-01-01 28.8840975756512 2015-01-01 29.4023218750795 2016-01-01 29.9316423057305 2017-01-01 30.4664106753466