Year Percent of Working-Age Population 1960-01-01 10.01379260989360 1961-01-01 9.99368973262989 1962-01-01 9.98674841128512 1963-01-01 10.00669902088980 1964-01-01 10.05612572730920 1965-01-01 10.12551113327030 1966-01-01 10.29642636384030 1967-01-01 10.49819036300780 1968-01-01 10.75250895209040 1969-01-01 11.06417847776620 1970-01-01 11.42572436391720 1971-01-01 11.26519303725170 1972-01-01 11.07176036265650 1973-01-01 10.86364155338480 1974-01-01 10.65744426626600 1975-01-01 10.46204877181480 1976-01-01 10.86610137143170 1977-01-01 11.33565393129810 1978-01-01 11.86712697967250 1979-01-01 12.44378539365630 1980-01-01 13.04996298332270 1981-01-01 13.23213486536480 1982-01-01 13.41033737409970 1983-01-01 13.60694281887500 1984-01-01 13.82557544483070 1985-01-01 14.05464129657960 1986-01-01 14.26890460733770 1987-01-01 14.49771019121050 1988-01-01 14.77311955724820 1989-01-01 15.09165711361640 1990-01-01 15.42428569572330 1991-01-01 15.59015742729350 1992-01-01 15.74862708436740 1993-01-01 15.90610387229880 1994-01-01 16.07950599512790 1995-01-01 16.28568567494290 1996-01-01 16.44622912744430 1997-01-01 16.62844584784300 1998-01-01 16.84185553472150 1999-01-01 17.09200702536650 2000-01-01 17.37992976845510 2001-01-01 17.63427130512990 2002-01-01 17.87449095138170 2003-01-01 18.09798300853730 2004-01-01 18.30878475663720 2005-01-01 18.51928245789650 2006-01-01 18.76531613952080 2007-01-01 18.97548546174840 2008-01-01 19.15239918151900 2009-01-01 19.32521345276380 2010-01-01 19.53561149463520 2011-01-01 19.95754931109650 2012-01-01 20.41073698295050 2013-01-01 20.86826971309810 2014-01-01 21.29975070335900 2015-01-01 21.70479847243000 2016-01-01 22.20383150238140 2017-01-01 22.67484259149760