Year % of total labor force 1991 0.9383557806394469 1992 0.875461915475187 1993 0.8693153463390552 1994 0.7944292792114906 1995 1.3043431888213335 1996 1.2942537881190386 1997 1.273349908224568 1998 1.2352144748075002 1999 1.2510868819696928 2000 1.242464674421752 2001 1.078549953642421 2002 1.1010633835480659 2003 1.0675890082534907 2004 1.0004874469105984 2005 0.9773277519532106 2007 0.9351285283614745 2008 0.9244328687445341 2009 0.9413727586695825 2010 0.9568588057466946 2011 0.9286456798654725 2012 0.9121525795735553 2013 0.8849507645850978 2014 0.8498914258326015 2015 0.8451416135695351 2016 0.8189987022398374 2017 0.7829452534693637 2018 0.7648963456314997 2019 0.7678854396338426 2020 0.6953964302064471