Year	% of total labor force (modeled ILO estimate)
1991	16.528
1992	16.544
1993	16.8
1994	17
1995	15.83
1996	16.33
1997	20.47
1998	21.6
1999	18.09
2000	16.49
2001	18.556
2002	20.39
2003	22.18
2004	20.97
2005	18.7
2006	16
2007	14
2008	12.72
2009	15.37
2010	17.116
2011	18.86
2012	19.06
2013	22.21
2014	21.592
2015	20.851
2016	19.928
2017	19.136
2018	19.329
2019	15.613
2020	25.225
2021	20.514
2022	15.934
2023	11.092