Year % of total employment (modeled ILO estimate) 1991 18.9734534532775 1992 19.1057064115956 1993 19.2606223070341 1994 19.4750096667312 1995 19.7233993474959 1996 20.0041645172174 1997 20.1934452721824 1998 20.2362880802023 1999 20.1928449430183 2000 19.9726578489328 2001 19.6357047155828 2002 19.191888357049 2003 18.674917331036 2004 18.1050819016277 2005 17.5408552875764 2006 17.000401608833 2007 16.4458271487474 2008 17.6410038966538 2009 18.8044404656136 2010 18.1960653277205 2011 17.5386970166427 2012 16.8753976760495 2013 16.1954155089543 2014 15.4991924970327 2015 14.8105781342467 2016 14.1219383185606 2017 13.4028162597099 2018 12.6872514413224 2019 11.9505516882175 2020 11.9055768957053 2021 11.5608870320058 2022 11.2360091833777