Year % of total employment (modeled ILO estimate) 1991 23.5730568780349 1992 23.4740933911394 1993 23.2501811631813 1994 23.2102166883392 1995 23.0585057845302 1996 23.0276522050894 1997 23.4597335653132 1998 22.8055572920332 1999 22.2580164846542 2000 21.7864848730312 2001 21.7505279785718 2002 21.6766377135114 2003 21.6688468879072 2004 20.7895795809366 2005 20.8533039218755 2006 20.8230891987691 2007 21.180255167265 2008 21.1022211080155 2009 20.2171073235616 2010 19.6960016930786 2011 20.2468028880185 2012 20.2296181022978 2013 20.3156056757951 2014 20.4387414228105 2015 20.1240612394476 2016 19.4673197194841 2017 19.4047171871918 2018 19.4666135327244 2019 19.4217949565997 2020 19.4612258287114 2021 19.144160676676 2022 19.3440558388993