Year % of total labor force 1991 47.818946651015004 1992 47.79671659716111 1993 47.7344287350233 1994 47.6315687671859 1995 47.60745040724953 1996 47.83243871543013 1997 47.67117136205597 1998 47.139025610593315 1999 47.56061290894793 2000 47.777928827399315 2001 47.59775430949009 2002 47.69813354389085 2003 47.730404213958955 2004 47.60106536145249 2005 47.46346150935005 2006 47.43561032113689 2007 47.4938336584208 2008 47.42621969805866 2009 47.38954580643638 2010 47.14777878293263 2011 47.27004311161739 2012 47.37041697823489 2013 47.391815094120815 2014 47.40813661608651 2015 47.5486069298921 2016 47.4700493676937 2017 47.44781432004356 2018 47.468836685080454 2019 47.38815986932922 2020 47.08020566946625 2021 47.13496752884576 2022 47.04740680097257 2023 47.14507678893946