Year % of total labor force 1991 46.617739243980985 1992 46.67679195753694 1993 46.760151316468956 1994 46.86039564134892 1995 46.97961807740854 1996 47.024724019671176 1997 47.088347144712436 1998 47.158274078811104 1999 47.23013400506572 2000 47.30214069905077 2001 47.27410195685857 2002 47.254199605358735 2003 47.243466738716556 2004 47.23351128868836 2005 47.22632471544049 2006 47.14919312653257 2007 47.0841806449594 2008 47.02721841196219 2009 46.97488010538866 2010 46.92966726800094 2011 46.856151823983936 2012 46.8764436449873 2013 46.89840009493011 2014 46.40909992898209 2015 45.91586333159582 2016 45.41533832234552 2017 44.91211519544292 2018 44.409527822433795 2019 43.90362495067793 2020 43.882252625368004 2021 43.80627569312554 2022 43.73797058038955 2023 43.78086786493293