Year % of total labor force 1991 1.0325727856496703 1992 1.0334444089342425 1993 0.9757180483917339 1994 0.936714659940931 1995 1.2002896821635742 1996 1.1793134100569722 1997 1.1433111670311062 1998 1.1241767064023096 1999 1.0884702984677088 2000 1.0630815970598868 2001 1.0097421624116156 2002 0.9976785533868775 2003 0.9812668860938017 2004 0.9438981404611798 2005 0.9651816743372161 2006 0.958844916351139 2007 0.8935338716388282 2008 0.890206026766551 2009 0.8931251846895278 2010 0.8911390333038675 2011 0.8775725132370538 2012 0.8718139915979408 2013 0.8338279533185204 2014 0.8284659893337921 2015 0.823326383891325 2016 0.8176671997549949 2017 0.8072138303266861 2018 0.8057398771232576 2019 0.7975215168345282 2020 0.7963080555371124