Year % of total employment (modeled ILO estimate) 1991 23.54023862116311 1992 22.63901733163476 1993 22.588156096294792 1994 22.55406105357069 1995 22.458864385736806 1996 22.921916198650315 1997 22.480236213215324 1998 22.49860811262528 1999 22.4569292304999 2000 22.045119637521637 2001 22.044297959044943 2002 21.80620360849403 2003 21.64972883419667 2004 22.01015321245447 2005 22.651983825830005 2006 23.050233914889944 2007 23.532204063156275 2008 24.251208123669887 2009 24.581526796545937 2010 25.23842903210222 2011 24.710561218690845 2012 24.77207007114329 2013 24.591895923865383 2014 24.706942152274888 2015 25.013781827293798 2016 25.524141960132603 2017 25.876272794945336 2018 25.827459050353877 2019 25.58308617735825 2020 25.19318721468406 2021 24.855711483881354 2022 24.581588283659027