Year % of total employment (modeled ILO estimate) 1991 31.0499237804878 1992 31.0764851576652 1993 31.1087519792716 1994 31.511282607536 1995 31.6331964748931 1996 34.1608656923229 1997 33.9077111758393 1998 33.5181217505956 1999 33.0983556213183 2000 32.0755209012439 2001 31.6574971511193 2002 31.3172841559923 2003 31.4476426003526 2004 31.0187023069119 2005 30.633379762044 2006 30.2475088396014 2007 30.0700704528291 2008 30.106463808713 2009 30.6210227573199 2010 31.0298620122298 2011 31.1847699250084 2012 31.9945653454383 2013 32.359237769591 2014 30.7485319366893 2015 32.4747816247395 2016 33.5291005291005 2017 34.2144801725909 2018 34.7714654574825 2019 35.2379632138424 2020 33.5174022943807 2021 32.7140903902359 2022 32.6322328718495