Year % of total labor force 1991 1.5104469510768688 1992 1.343812994983618 1993 1.2877350935752252 1994 1.2339600344583341 1995 1.8395370581265744 1996 1.9103444560244824 1997 1.9102166195056454 1998 1.8288331125820654 1999 1.6629844056006902 2000 1.6827997463070392 2001 1.4435530391154754 2002 1.4703840281382752 2003 1.344548539341718 2004 1.1543113565930259 2005 1.119440844289415 2006 1.3355818776109192 2007 1.2821791346715485 2008 1.2208804823845802 2009 1.2061520539356019 2010 1.1811692098716216 2011 1.1748259039566362 2012 1.1622048794082294 2013 1.1553603424488055 2014 0.9470433725485212 2015 0.9467330250618806 2016 0.9370209258122578 2017 0.8999636312165487 2018 0.876323810522153 2019 0.8528017722732121 2020 0.9387560318045791