Year Percent of Working-Age Population 1960-01-01 14.5981044223726 1961-01-01 14.7713240821291 1962-01-01 14.9060000044247 1963-01-01 15.0203220023063 1964-01-01 15.1394335311821 1965-01-01 15.2800330757157 1966-01-01 15.4482613633213 1967-01-01 15.6198664666614 1968-01-01 15.7938812391776 1969-01-01 15.9644923159954 1970-01-01 16.1289127007036 1971-01-01 16.2815212330299 1972-01-01 16.4108787012307 1973-01-01 16.5190987357042 1974-01-01 16.6073351472590 1975-01-01 16.6777105782435 1976-01-01 16.8324430180942 1977-01-01 16.9614245360132 1978-01-01 17.0624783455185 1979-01-01 17.1288589451100 1980-01-01 17.1615522590188 1981-01-01 17.2313369806374 1982-01-01 17.2568800808136 1983-01-01 17.2709550776496 1984-01-01 17.3173963983405 1985-01-01 17.4215449182755 1986-01-01 17.5904412648732 1987-01-01 17.7982623984339 1988-01-01 18.0260714799964 1989-01-01 18.2418115567003 1990-01-01 18.4287792986321 1991-01-01 18.6113289912881 1992-01-01 18.7599848061765 1993-01-01 18.8901168853572 1994-01-01 19.0215536621411 1995-01-01 19.1662234454456 1996-01-01 19.3489543806213 1997-01-01 19.5274749919141 1998-01-01 19.6979888733136 1999-01-01 19.8521173619018 2000-01-01 19.9883249824399 2001-01-01 20.1817411046839 2002-01-01 20.3623248121746 2003-01-01 20.5398917484488 2004-01-01 20.7239246043922 2005-01-01 20.9245047927525 2006-01-01 21.2529197609494 2007-01-01 21.5765335678169 2008-01-01 21.9408516794634 2009-01-01 22.4115867557672 2010-01-01 23.0271623877391 2011-01-01 23.7941092146325 2012-01-01 24.6860796732247 2013-01-01 25.6464370717950 2014-01-01 26.5810885443916 2015-01-01 27.4326941697936 2016-01-01 28.2415312403315 2017-01-01 28.9757730893801