Year % of total employment (modeled ILO estimate) 1991 22.753739168828282 1992 22.896779253089548 1993 23.02882577363285 1994 23.1483287179687 1995 23.30113130799545 1996 23.3650888161159 1997 22.799519166555328 1998 22.21311962006531 1999 21.56107521143425 2000 20.85895824131014 2001 20.2542307138187 2002 19.658082572191027 2003 18.54814720380753 2004 17.59108069598859 2005 16.808823229334628 2006 16.153591193515624 2007 15.497096341887115 2008 15.460101069455844 2009 15.497248522713004 2010 15.643207605029147 2011 15.831980943161629 2012 16.03622902455982 2013 16.201719730420635 2014 16.348483735957128 2015 16.467903615767078 2016 16.565882458180504 2017 16.60951943300517 2018 16.63057146849242 2019 16.585921915075506 2020 16.753578553179572 2021 16.73925717617206 2022 16.720605898838922