Year % of total employment (modeled ILO estimate) 1991 8.70688077561343 1992 8.99790302947119 1993 9.61199665783133 1994 9.78771418247171 1995 10.4432673365942 1996 11.0590514854175 1997 11.7123163719211 1998 12.0589005425171 1999 12.2272145626066 2000 12.6092863461647 2001 13.0631131360764 2002 13.4988217817244 2003 13.9461224222812 2004 14.3912389354807 2005 14.7800557209499 2006 15.1238347106165 2007 15.4940511798751 2008 15.8332756145101 2009 16.0925212157167 2010 16.3213213077637 2011 16.3912961429842 2012 16.3973502877048 2013 16.4912805269499 2014 16.6146107018313 2015 16.7657138877447 2016 16.2696635153455 2017 15.7039073877954 2018 17.0167747040455 2019 16.6405621137525 2020 18.5773017843958 2021 18.6338484065041 2022 18.7853504888887