Year % of total employment (modeled ILO estimate) 1991 28.5267348017775 1992 28.5433751085115 1993 28.7961449380002 1994 28.6373068941665 1995 28.5658457399238 1996 28.377523998078 1997 28.2393971088376 1998 28.124222035603 1999 28.1764932341927 2000 28.4551382543294 2001 28.5679158348311 2002 28.7272604656652 2003 29.1242465146746 2004 29.9838593191832 2005 31.0095880215402 2006 32.2505150522403 2007 33.3783363134234 2008 34.5349605149689 2009 34.534144486692 2010 35.7194061316946 2011 35.1522019529247 2012 34.9940998892372 2013 35.053982948921 2014 35.2019986677365 2015 35.1573587220676 2016 35.2436672757928 2017 35.3020262435966 2018 35.1401222872586 2019 35.0027287781866 2020 34.8948411832851 2021 34.9958941594723 2022 34.8175789818714