Year % of total employment (modeled ILO estimate) 1991 3.96461308215342 1992 3.5718605541339 1993 3.44533444496067 1994 3.3551972715371 1995 3.37598163467942 1996 3.13923805605388 1997 3.24135709580969 1998 3.1358964218018 1999 3.19633613659053 2000 3.1989257060377 2001 3.16058923776116 2002 3.05321792261555 2003 3.01334592918478 2004 3.05243596073533 2005 2.93781128482083 2006 2.92742809250941 2007 2.88506410804868 2008 2.81798262151475 2009 2.78683508708879 2010 2.65175689934386 2011 2.52449142967298 2012 2.53464385203975 2013 2.47896231059426 2014 2.54821837858055 2015 2.44931045763451 2016 2.43224591910341 2017 2.23916712988303 2018 2.05892950902371 2019 2.21368694659025 2020 2.18789326902127 2021 2.17387491013879 2022 2.16691201974903