Year Percent of Working-Age Population 1960-01-01 3.65051144103997 1961-01-01 3.76548352543738 1962-01-01 3.85080453419440 1963-01-01 3.91637680447586 1964-01-01 3.95990062940562 1965-01-01 3.98544170220097 1966-01-01 4.11344391798540 1967-01-01 4.21320220036673 1968-01-01 4.29195979693601 1969-01-01 4.35520657766121 1970-01-01 4.41907103373009 1971-01-01 4.62985365853659 1972-01-01 4.81811390149991 1973-01-01 4.97441972577348 1974-01-01 5.09146829147702 1975-01-01 5.17351741893502 1976-01-01 5.35741545122747 1977-01-01 5.51022494887526 1978-01-01 5.64177396088879 1979-01-01 5.74663344585193 1980-01-01 5.82237596514028 1981-01-01 5.88405977972606 1982-01-01 5.89948244306268 1983-01-01 5.88040945333127 1984-01-01 5.83952681343692 1985-01-01 5.78551358690528 1986-01-01 5.72377236592021 1987-01-01 5.64991130668287 1988-01-01 5.56562100170905 1989-01-01 5.46754155652534 1990-01-01 5.35707430677296 1991-01-01 5.39999668190227 1992-01-01 5.42568845486970 1993-01-01 5.43811927371284 1994-01-01 5.44643930704237 1995-01-01 5.45247163777828 1996-01-01 5.43826286768016 1997-01-01 5.41417135148076 1998-01-01 5.37851741632091 1999-01-01 5.33237912444238 2000-01-01 5.27918106675997 2001-01-01 5.20819077991392 2002-01-01 5.12304490676971 2003-01-01 5.03951057127926 2004-01-01 4.97204143624022 2005-01-01 4.92819388799572 2006-01-01 4.93274484250258 2007-01-01 4.95170865323911 2008-01-01 4.96414979392606 2009-01-01 4.94725497941876 2010-01-01 4.89163415191293 2011-01-01 4.82650726455116 2012-01-01 4.73052780231004 2013-01-01 4.62496297192542 2014-01-01 4.53715883430059 2015-01-01 4.47951612746385 2016-01-01 4.46704194661340 2017-01-01 4.47006146812109