Year % of total employment (modeled ILO estimate) 1991 23.7189751801441 1992 23.8330224847166 1993 24.4724731763362 1994 24.1789247730299 1995 24.8991781401747 1996 25.3341285393769 1997 25.9025938779874 1998 26.7010832769127 1999 26.6669382932345 2000 26.8772237656577 2001 27.4397292516817 2002 27.9590990863875 2003 28.2337508250963 2004 28.7867840122557 2005 29.1898935514825 2006 29.4937832095396 2007 29.8438081694666 2008 30.2022577910364 2009 30.3710414943815 2010 30.1382442945531 2011 30.3005481171316 2012 30.557496937341 2013 30.623886463216 2014 30.7359424047205 2015 30.7947426896438 2016 30.7648766593021 2017 30.6050419425659 2018 31.0528889164081 2019 31.172730374368 2020 30.8894762829026 2021 30.9019412765887 2022 31.3250153546493