Year % of total employment (modeled ILO estimate) 1991 30.836390776455595 1992 31.090404473503913 1993 30.27664897800037 1994 30.020946040343595 1995 29.6670651830887 1996 28.67590281385904 1997 28.627722516469476 1998 28.022307659894473 1999 27.529883638013825 2000 27.628588411201882 2001 26.723834628155583 2002 26.05798250820375 2003 25.940890809759303 2004 26.04848960461262 2005 25.298192205241058 2006 24.742132658657106 2007 24.330128130747898 2008 23.577636655988453 2009 22.75211674732968 2010 21.756656362252567 2011 21.548200419349357 2012 21.201474329117215 2013 20.953786231493865 2014 20.6659355769127 2015 19.830740499588824 2016 19.45422343774751 2017 19.324010024095806 2018 18.292338187900633 2019 18.03044817862331 2020 17.880254209976318 2021 17.191844090142183 2022 16.651258569333017