Year % of total labor force 1991 46.667313899618534 1992 46.565519127106064 1993 46.504087732906655 1994 46.45550950401158 1995 46.404782273978554 1996 46.356812010860885 1997 46.69686784650473 1998 46.5308859376656 1999 46.105376209542875 2000 46.41942400427158 2001 46.06478426220652 2002 46.05265731163416 2003 45.68179973738917 2004 45.84458979451721 2005 45.89047297549991 2006 46.08844885263449 2007 45.76276749376395 2008 46.03343362129845 2009 46.02792096261172 2010 45.83596050780079 2011 45.9370238948966 2012 46.134703958083676 2013 45.77793836926623 2014 45.97347392246436 2015 45.895113052542754 2016 46.435860578852655 2017 46.4103851534813 2018 45.9420169463366 2019 45.96631205673759 2020 46.03844787523367 2021 46.17492427510207 2022 45.94248027305202 2023 45.92614979990298