Year % of total employment (modeled ILO estimate) 1991 2.29138551506973 1992 2.26119567615266 1993 2.2643968396188 1994 2.2785492786841 1995 2.22322566935827 1996 2.21114013562363 1997 2.18250871442693 1998 2.11242113972489 1999 2.12166248142264 2000 2.08971218616044 2001 2.10903910244995 2002 2.02926144904299 2003 1.97251773049645 2004 1.85279867552894 2005 1.78441721950511 2006 1.70639479226498 2007 1.56550202803672 2008 1.5138316656857 2009 1.49627703581137 2010 1.49331811480477 2011 1.46171031991254 2012 1.4185908821788 2013 1.36699449437674 2014 1.34586024662361 2015 1.31942816967424 2016 1.27758148676791 2017 1.21805812077713 2018 1.14980059239219 2019 1.13958113958114 2020 1.18204476470153 2021 1.15221935922991 2022 1.12261708637326