Year % of total employment (modeled ILO estimate) 1991 19.54642453604307 1992 20.25659164321644 1993 20.23738138736719 1994 20.1059853231349 1995 20.05382487230177 1996 20.08315565152864 1997 19.19941495751838 1998 19.53676330345227 1999 20.186116778892476 2000 19.921723530273145 2001 19.02729733091936 2002 18.484419410170833 2003 18.466653988087536 2004 18.427245228829275 2005 17.727188085024967 2006 16.940494628750262 2007 16.53116000324339 2008 16.5226910160101 2009 15.75953332990318 2010 15.59664570345777 2011 16.034873828533446 2012 15.91759184310671 2013 14.78834006305663 2014 14.573460424722798 2015 14.124409944052287 2016 17.149613658520877 2017 17.33954913908392 2018 17.543646278638303 2019 17.72908153105372 2020 18.901838539486306 2021 19.115369062581838 2022 19.138926499565216