Year % of total employment (modeled ILO estimate) 1991 14.5253931843684 1992 14.9312758958433 1993 14.5653794708746 1994 14.9549916069364 1995 14.988011007217 1996 14.9815076000382 1997 15.1891954161788 1998 15.5889551640864 1999 15.5625508298217 2000 15.4583564387575 2001 16.0043368566358 2002 16.5553461787639 2003 16.9250151495597 2004 17.6488875893847 2005 18.5589341946091 2006 18.3265408053422 2007 18.534268916238 2008 18.5625280188411 2009 19.0425123382419 2010 19.068097114231 2011 19.4341515815219 2012 19.7652228282734 2013 20.2930473633117 2014 20.6980814894536 2015 20.7676820384344 2016 20.456697052966 2017 20.4270916055021 2018 20.6894233163163 2019 21.1083899190927 2020 20.8572694520825 2021 20.916266015621 2022 21.2238186940616