Year % of total employment (modeled ILO estimate) 1991 21.9839347758781 1992 22.0035216522323 1993 21.9897384327627 1994 21.9587703311001 1995 21.9592672870511 1996 21.8291024997261 1997 21.6043292556549 1998 21.7231071618689 1999 21.4248516068126 2000 20.1116955179296 2001 23.1826322612969 2002 22.737697009537 2003 23.5820551203043 2004 18.5143111761482 2005 20.1098121758775 2006 21.0993042101952 2007 18.8539777316029 2008 19.2894451110465 2009 17.7315787787602 2010 18.0555582298128 2011 18.3458999329726 2012 14.4194480742753 2013 15.6832679467017 2014 17.7197870584881 2015 14.4457223265396 2016 15.4254690605794 2017 17.0281488024256 2018 18.6635457195328 2019 17.1917226074166 2020 17.3363625239288 2021 18.6806962536263 2022 18.1033415418351