Year	% of total labor force (modeled ILO estimate)
1991	2.2
1992	2.253
1993	2.32
1994	2.381
1995	2.446
1996	2.51
1997	2.699
1998	2.891
1999	3.082
2000	3.27
2001	3.614
2002	3.967
2003	4.32
2004	4.294
2005	4.25
2006	3.591
2007	4.045
2008	4.516
2009	5
2010	3.379
2011	3.73
2012	4.075
2013	4.426
2014	4.406
2015	4.382
2016	4.35
2017	4.372
2018	4.532
2019	4.693
2020	5.828
2021	5.815
2022	5.247
2023	5.06