Year % of total employment (modeled ILO estimate) 1991 20.9713302204019 1992 21.059110773713 1993 21.0447298068181 1994 21.0723798806805 1995 21.0010516770797 1996 20.778288046258 1997 20.6333022788414 1998 20.5337217920213 1999 20.4420595120024 2000 20.4303119278934 2001 20.6247638536737 2002 21.1216202621763 2003 23.2281261567863 2004 25.8115861456516 2005 25.482631594221 2006 25.2491809074353 2007 25.0954190239792 2008 24.8679480185209 2009 24.4280516105825 2010 23.8417219921934 2011 23.3030472971043 2012 22.7450437267783 2013 22.2478095507809 2014 21.753842812875 2015 21.1423527965873 2016 20.532015059333 2017 20.1492375210769 2018 19.6559621524934 2019 18.4383752958731 2020 17.5743625687405 2021 18.412622893379 2022 18.2445478311613