Year % of total employment (modeled ILO estimate) 1991 4.52749765825187 1992 4.52713499180056 1993 4.54424189899594 1994 4.72038633750755 1995 5.01805827227037 1996 5.09647232609172 1997 4.87154999522491 1998 5.25222759579447 1999 5.08925289799718 2000 5.10623843523246 2001 5.0425029030192 2002 5.50489243664235 2003 4.99073391140504 2004 4.88203027260182 2005 5.02313497862509 2006 5.06823607276136 2007 5.3360675210439 2008 5.30784962192544 2009 4.90980994157772 2010 4.72575719419544 2011 4.55019278273238 2012 4.51141660378734 2013 4.38708567221745 2014 5.22341166495064 2015 5.2003497474771 2016 5.1936398238545 2017 4.96065540522898 2018 4.72300061833156 2019 4.92008821035578 2020 5.2718431622139 2021 5.78941687902863 2022 5.48295930006896