Year	% of total labor force (modeled ILO estimate)
1991	18.69
1992	18.92
1993	19.102
1994	19.411
1995	19.483
1996	19.322
1997	19.439
1998	19.271
1999	19.306
2000	19.168
2001	19.186
2002	19.198
2003	19.002
2004	18.873
2005	18.613
2006	18.744
2007	18.708
2008	18.953
2009	19.18
2010	19.208
2011	19.43
2012	19.03
2013	19.316
2014	19.298
2015	19.649
2016	19.5
2017	19.015
2018	18.836
2019	19.037
2020	19.535
2021	19.595
2022	19.319
2023	18.743