Year % of total employment (modeled ILO estimate) 1991 20.95931154598017 1992 21.157103368119703 1993 21.64766389134952 1994 22.57094980999851 1995 23.267983253573554 1996 23.573422140723462 1997 24.551334794394773 1998 24.64471682999737 1999 24.32736069784506 2000 24.37159457951716 2001 24.754840348219577 2002 23.974373112688486 2003 23.905727906660008 2004 23.370962345929822 2005 23.246113673529972 2006 22.934327870254595 2007 22.448027074592634 2008 22.217430440360623 2009 22.706683204570105 2010 23.014611284285955 2011 23.035118287600543 2012 22.63833294679901 2013 22.691892615368214 2014 21.919670238148484 2015 21.679785853545546 2016 21.524231229760417 2017 21.3104706933963 2018 21.078308126931756 2019 20.97535010430939 2020 20.810940552615012 2021 20.770151658399786 2022 21.13650697168286