Year % of total labor force 1991 48.39995220720017 1992 48.299668902862045 1993 48.1940137856199 1994 48.04688481525898 1995 47.92313036460147 1996 47.80468210439677 1997 47.70253206975591 1998 47.66519772962433 1999 47.583054304331974 2000 47.52948583949327 2001 47.48581223563651 2002 47.446630419610315 2003 47.40665293484573 2004 47.360682633799115 2005 47.26677136519401 2006 47.12608373690756 2007 47.00249727331499 2008 46.89564868312922 2009 46.80911321393001 2010 46.73941803469819 2011 46.69011201094169 2012 46.64763102306319 2013 46.610823238135644 2014 46.580013731138344 2015 46.582937195937 2016 46.62357766543043 2017 46.66944473603569 2018 46.71151778907353 2019 46.751568838293544 2020 46.760004148232426 2021 47.02045427043732 2022 46.78453460534478 2023 46.81696003922067