Year % of total employment (modeled ILO estimate) 1991 21.439051026835116 1992 21.31950789487173 1993 21.30254121183301 1994 21.228736226980708 1995 21.186878128618662 1996 21.251639476003614 1997 21.228074484617665 1998 20.998490016347848 1999 20.7744860613814 2000 20.6254660953386 2001 20.60276814297237 2002 20.34396464149009 2003 20.397591782979177 2004 20.71205556625899 2005 21.139119910528876 2006 21.6267234489632 2007 22.193998511889586 2008 22.280098677804514 2009 22.243135363228724 2010 22.576134288612003 2011 22.923015227653337 2012 23.340723861489547 2013 23.320094969136115 2014 23.36593361121606 2015 23.233634094292462 2016 23.284961915630895 2017 23.39313183341757 2018 23.526195272985493 2019 23.547198023089717 2020 23.416581089711233 2021 23.735135541629077 2022 23.891300294617984