Year % of total labor force 1991 46.90523413909027 1992 46.51000027964119 1993 46.09426304150896 1994 44.594019983349924 1995 44.7622524597703 1996 45.20044943391668 1997 45.09875024796667 1998 45.228903314652456 1999 45.51536246459425 2000 45.846704335539386 2001 45.765975706968746 2002 45.640985556758736 2003 45.73520785905419 2004 45.47539869681042 2005 44.79913117457067 2006 44.51109242741944 2007 44.60628052152823 2008 44.6105004597702 2009 44.30633692553055 2010 44.63498684034438 2011 44.20001706058108 2012 44.32058989603747 2013 44.548910701953645 2014 45.000711811322546 2015 45.04605886119945 2016 45.228441989478654 2017 45.401910027207286 2018 45.176982903107906 2019 45.23572215518024 2020 45.402831964641365 2021 46.990094575545946 2022 47.07321206462691 2023 47.04663201423126