Year % of total labor force 1993 1.3094183286028942 1994 1.9142700277446967 1995 2.0573724529930737 1996 1.8514516016248275 1997 1.7913112477683 1998 1.9102276490444687 1999 1.8652597338822783 2000 1.5975407179006764 2001 1.439287274104435 2002 1.1781841475132309 2003 0.8287916180536432 2004 0.7499940000479997 2005 0.7528816545327239 2006 0.6400816894843239 2007 0.6400320467810717 2008 0.6321143070893107 2009 0.617004941339555 2010 0.587314686770457 2011 0.5904153059487416 2012 0.5849507128279507 2013 0.5831616041984692 2014 0.5785748442228298 2015 0.57835844722616 2016 0.5741750897125937 2017 0.5807318964090443 2018 0.5770073667640844 2019 0.5835022754765299 2020 0.6636380193797049