Year	% of total labor force (modeled ILO estimate)
1991	3.694
1992	3.71
1993	4.11
1994	3.64
1995	3.15
1996	2.52
1997	2.45
1998	3.2
1999	3.43
2000	3
2001	3.53
2002	3.48
2003	3.61
2004	3.54
2005	3.53
2006	3.32
2007	3.23
2008	3.32
2009	3.66
2010	3.39
2011	3.05
2012	3.1
2013	3.16
2014	2.88
2015	3.1
2016	3.44
2017	3.41
2018	3.3
2019	3.26
2020	4.54
2021	4.64
2022	3.93
2023	3.855