Year	% of total labor force (modeled ILO estimate)
1991	2.468
1992	2.505
1993	2.432
1994	2.58
1995	2.532
1996	2.448
1997	2.414
1998	2.44
1999	2.55
2000	2.681
2001	2.742
2002	2.855
2003	2.78
2004	3.475
2005	4
2006	3.67
2007	3.3
2008	3.497
2009	3.715
2010	3.723
2011	3.827
2012	3.852
2013	4.055
2014	4.254
2015	4.468
2016	4.594
2017	4.66
2018	4.695
2019	4.701
2020	4.985
2021	5.11
2022	5.348
2023	5.293