Year % of total employment (modeled ILO estimate) 1991 12.8014009048258 1992 12.7639636224377 1993 12.7396788303673 1994 12.7571226289754 1995 12.7504743552323 1996 12.714391620381 1997 12.685212868484 1998 12.7375565887206 1999 12.8204010341136 2000 12.9436541033731 2001 13.1541852941753 2002 13.8194475121851 2003 14.65089288079 2004 15.6065849512392 2005 16.5558111534345 2006 17.5317165639157 2007 17.5216553357117 2008 17.6429781317153 2009 17.8493133885097 2010 18.2131890217409 2011 18.6034723224471 2012 18.58882082959 2013 18.5620907839767 2014 18.4858242180471 2015 18.4161238737522 2016 17.5709533165178 2017 18.7399596018939 2018 19.8152650816004 2019 21.1445071011917 2020 21.6418265570276 2021 22.392339482976 2022 22.6258293491238