Year % of total labor force 1991 1.2692279047178638 1992 1.3301115076813939 1993 1.2983693847232491 1994 1.2638704235695426 1995 1.2430969139144559 1996 1.2153747874946828 1997 1.1729470207002557 1998 1.109823592795142 1999 1.109221912826797 2000 1.1177490622414117 2001 1.1186224258356139 2002 1.0817195723409008 2003 1.0458730775305012 2004 0.7648942786172457 2005 0.7684879304963063 2006 0.8981149599666038 2007 0.908092487975938 2008 0.8900360464598815 2009 0.9133710535256528 2010 0.9119667515504039 2011 0.9050189633103904 2012 0.8689142582145817 2013 0.8601793947200096 2014 0.5783895222786418 2015 0.5398310534137326 2016 0.5124560136681765 2017 0.5005521334203399 2018 0.5013946672514042 2019 0.5007531565929041 2020 0.5405916775911235