Year	% of total labor force (modeled ILO estimate)
1991	19.037
1992	19.247
1993	19.208
1994	19.686
1995	19.477
1996	19.394
1997	19.033
1998	18.947
1999	18.951
2000	18.781
2001	18.883
2002	18.893
2003	18.914
2004	18.846
2005	18.873
2006	18.9
2007	18.834
2008	18.88
2009	18.926
2010	18.973
2011	19.021
2012	19.078
2013	18.995
2014	18.847
2015	18.444
2016	18.372
2017	18.545
2018	18.783
2019	18.828
2020	19.35
2021	19.553
2022	19.128
2023	19.027