Year % of total labor force 1991 1.8579362490050753 1992 1.8386516946484939 1993 1.8559417976652255 1994 1.7936396104501748 1995 1.8541024290141144 1996 1.8095793069283959 1997 1.7559031712083106 1998 1.766154956788475 1999 1.791085903235436 2000 1.6420394129508848 2001 1.6108979846886744 2002 1.6480135456081104 2003 1.6735906719836218 2004 1.6581662358229117 2005 1.6510855954045227 2007 1.5858748150833226 2008 1.5725609367362985 2009 1.5181888440960483 2010 1.5194919536632305 2011 1.4707208092258404 2012 1.4794653694652298 2013 1.4792202968786419 2014 1.4477658043974535 2015 1.4606818313563907 2016 1.460241832112927 2017 1.265578116083427 2018 1.273656292611295 2019 1.2618940685816482 2020 1.3060107959601526