Year % of total employment (modeled ILO estimate) 1991 7.3299541613332 1992 7.37995051142604 1993 7.37043213708269 1994 7.38057073843051 1995 7.39673956981615 1996 7.46057865447243 1997 7.53074345284723 1998 7.60039704029017 1999 7.65553568687167 2000 7.69023633397679 2001 7.69102396499803 2002 7.85604913642417 2003 8.03985743703987 2004 8.17036271543398 2005 8.33650429050686 2006 8.5039132783025 2007 8.72781283124371 2008 8.90380616810044 2009 9.4091266548344 2010 9.95054021546731 2011 10.4591134729955 2012 11.0374592873854 2013 11.5740163457043 2014 12.0373762202678 2015 12.6124442195564 2016 13.2170398465447 2017 13.9048490796334 2018 14.638503003613 2019 15.5577540253057 2020 15.6660429093923 2021 17.7192065473579 2022 18.2593463798542