Year % of total employment (modeled ILO estimate) 1991 19.4271647845293 1992 19.4350259435092 1993 19.4461217037352 1994 19.6745335485798 1995 19.5977909736792 1996 19.7103750992616 1997 19.797151243073 1998 19.8879582512221 1999 19.9533358437867 2000 20.0849527668034 2001 20.1831403540322 2002 20.3459545586567 2003 20.3777561785722 2004 20.4398877917861 2005 20.4503661784804 2006 20.4208965914539 2007 20.4383656273726 2008 20.4614103138179 2009 20.3674476776846 2010 20.3190078764636 2011 20.353783348681 2012 20.4122553922257 2013 20.5783030761568 2014 20.6866535006563 2015 20.7428664633331 2016 20.8647044682468 2017 20.9362888833837 2018 21.0237897003597 2019 21.2370825876183 2020 21.0502066946178 2021 21.1958641541045 2022 21.4438429801556