Year Percent of Working-Age Population 1960-01-01 9.27628694772328 1961-01-01 9.46437434638549 1962-01-01 9.61770461758898 1963-01-01 9.75389471067198 1964-01-01 9.89740223207873 1965-01-01 10.06211318379970 1966-01-01 10.27233679151630 1967-01-01 10.48922391709440 1968-01-01 10.71431615415050 1969-01-01 10.94419993803660 1970-01-01 11.17809529181780 1971-01-01 11.43230163077530 1972-01-01 11.66885076995910 1973-01-01 11.90067830936400 1974-01-01 12.14823968768180 1975-01-01 12.41679813609080 1976-01-01 12.72553817598460 1977-01-01 13.04456845553600 1978-01-01 13.33418848596740 1979-01-01 13.52985967621590 1980-01-01 13.61179616348210 1981-01-01 13.60505404975680 1982-01-01 13.50250656478090 1983-01-01 13.35376257824420 1984-01-01 13.21800622238240 1985-01-01 13.12999464801380 1986-01-01 13.15832176690250 1987-01-01 13.19827550368880 1988-01-01 13.27924958248950 1989-01-01 13.43804799986500 1990-01-01 13.68755319726140 1991-01-01 14.04463784043940 1992-01-01 14.56465409860740 1993-01-01 14.99233180303620 1994-01-01 15.31787896408110 1995-01-01 15.41507050142170 1996-01-01 15.50108938599060 1997-01-01 15.44537590100260 1998-01-01 15.31928755925340 1999-01-01 15.23818416962190 2000-01-01 15.23993661149740 2001-01-01 15.41544002257010 2002-01-01 15.65687421638140 2003-01-01 15.88210678222990 2004-01-01 15.96383325123610 2005-01-01 15.84279907476070 2006-01-01 15.69715939521990 2007-01-01 15.42005255027170 2008-01-01 15.10284781518260 2009-01-01 14.85056236096200 2010-01-01 14.70510410945000 2011-01-01 14.71381437719240 2012-01-01 14.77831669605650 2013-01-01 14.88427160956160 2014-01-01 15.03838690231520