Year Percent of Working-Age Population 1960-01-01 5.87823349158600 1961-01-01 6.04715400059175 1962-01-01 6.23517329019861 1963-01-01 6.42709543265942 1964-01-01 6.60623027866949 1965-01-01 6.76629421961474 1966-01-01 6.95461932034552 1967-01-01 7.09439658547502 1968-01-01 7.20354096642287 1969-01-01 7.30942834087402 1970-01-01 7.43012056499939 1971-01-01 7.69219492866755 1972-01-01 7.95303883571736 1973-01-01 8.18859565628329 1974-01-01 8.36994985458733 1975-01-01 8.48460780337427 1976-01-01 8.66083661954333 1977-01-01 8.80006116355118 1978-01-01 8.88925736882759 1979-01-01 8.90741764272460 1980-01-01 8.84920050530944 1981-01-01 8.69387169209941 1982-01-01 8.48227815073729 1983-01-01 8.26062257676321 1984-01-01 8.08660943551326 1985-01-01 7.99253252435681 1986-01-01 8.12227610901775 1987-01-01 8.33151514070866 1988-01-01 8.62837222670934 1989-01-01 9.01967474820100 1990-01-01 9.50813032327190 1991-01-01 10.16672520843950 1992-01-01 10.90269652549630 1993-01-01 11.70097216902240 1994-01-01 12.53279026887190 1995-01-01 13.37306965342180 1996-01-01 13.93702709299490 1997-01-01 14.44785154535380 1998-01-01 14.93763315931770 1999-01-01 15.45776105420740 2000-01-01 16.03209877502500 2001-01-01 16.82815490747840 2002-01-01 17.69344034267820 2003-01-01 18.53091284516740 2004-01-01 19.19230137296960 2005-01-01 19.60096436366490 2006-01-01 19.84708209784180 2007-01-01 19.86256190166800 2008-01-01 19.76245634396610 2009-01-01 19.71061106723310 2010-01-01 19.80318642544860 2011-01-01 20.16048910966760 2012-01-01 20.62039962865190 2013-01-01 21.17455947006010 2014-01-01 21.80746711246280 2015-01-01 22.51559281039260 2016-01-01 23.16532751947480 2017-01-01 23.90861321328810