Year % of total employment (modeled ILO estimate) 1991 19.0262931156916 1992 18.953429201455 1993 19.2069897449187 1994 18.5148777895855 1995 16.6192900112382 1996 19.2171526643507 1997 20.666435489464 1998 17.8121257956766 1999 18.1293017704396 2000 18.4780962190984 2001 18.7771478789538 2002 19.124869670197 2003 19.3746481086248 2004 19.4347713834122 2005 19.5110423648707 2006 19.5684185322639 2007 19.6577751294005 2008 19.8286664692078 2009 20.1331022376286 2010 20.4407108514653 2011 20.68997936852 2012 21.0064602132896 2013 21.3323622190617 2014 21.7619001734438 2015 22.4549148260226 2016 23.2142112698891 2017 23.3599234205488 2018 23.1908004912359 2019 22.8603025395948 2020 23.204401901413 2021 22.9225497778657 2022 22.6503089222048