Year % of total employment (modeled ILO estimate) 1991 17.6452996978071 1992 17.7395559197755 1993 17.8450349988676 1994 17.9704960960317 1995 18.1178833229873 1996 18.2757727291722 1997 18.4507901291008 1998 18.6598598006197 1999 18.886229572479 2000 19.137438277735 2001 19.4549032185852 2002 19.7793300466701 2003 20.0920678114676 2004 20.4097387124655 2005 20.7232729280877 2006 21.0447778103859 2007 21.3947191880967 2008 21.7510203088108 2009 22.4668598135107 2010 22.6833266207544 2011 22.7340768844988 2012 23.4667348680382 2013 23.8980987746455 2014 24.4341788739516 2015 25.1541608110053 2016 25.3408444856239 2017 25.3591152529766 2018 25.4225440086329 2019 25.6765394341765 2020 25.5294706407947 2021 25.588569591142 2022 25.980425080478