Year % of total employment (modeled ILO estimate) 1991 16.8740880577718 1992 17.1849688649664 1993 17.5165170790563 1994 17.9293136357245 1995 18.418424450469 1996 18.5281726230127 1997 18.4011049842847 1998 17.7792308553544 1999 17.6241222087319 2000 17.437066549471 2001 18.7387016558152 2002 18.761590680411 2003 17.7093513677374 2004 18.0046423956657 2005 18.7623381789085 2006 18.5912027659762 2007 18.8157558229521 2008 18.4416407538272 2009 18.295618546858 2010 18.6543804676066 2011 19.9904833231347 2012 21.0700962485372 2013 20.9541204929645 2014 21.3958873380743 2015 22.038455951212 2016 21.7238419570356 2017 22.0176763295734 2018 22.2727710890706 2019 22.2977652142744 2020 21.5353714015444 2021 21.7614342789652 2022 21.867968440679