Year	% of total labor force (modeled ILO estimate)
1991	2.37
1992	2.37
1993	2.69
1994	2.9
1995	3
1996	3.12
1997	3.23
1998	3.24
1999	3.25
2000	3.26
2001	3.8
2002	4.24
2003	4.58
2004	4.49
2005	4.52
2006	4.43
2007	4.35
2008	4.59
2009	4.72
2010	4.53
2011	4.55
2012	4.58
2013	4.6
2014	4.63
2015	4.65
2016	4.56
2017	4.47
2018	4.31
2019	4.56
2020	5
2021	4.55
2022	4.98
2023	4.67