Year % of total labor force 1991 1.4347768383974977 1992 0.7108760480978734 1993 0.7041658451398474 1994 0.7052658676004386 1995 1.095960149474823 1996 1.0998641135627436 1997 1.1046770601336302 1998 1.110024957657919 1999 1.1156015071416492 2000 1.1212952044736062 2001 1.1267523725406812 2002 1.1315974871235157 2003 1.1311309119834199 2004 0.7278947464196677 2005 1.0885894058479022 2006 1.0843713176557337 2007 1.0795017020143503 2008 1.0751262377390813 2009 0.9286344430514928 2010 0.9261667028821595 2011 0.3911597887737141 2012 0.38898534939724955 2013 0.3859256426539054 2014 1.1858755249243131 2015 1.1792207431865318 2016 1.1731136160537148 2017 1.030294080273646 2018 1.128020357449745 2019 1.0530306221304915 2020 1.0665832361557497