Year	% of total labor force (modeled ILO estimate)
1991	1.35
1992	1.351
1993	1.3
1994	1.708
1995	2.007
1996	2.414
1997	2.864
1998	3.36
1999	3.714
2000	4.12
2001	4.479
2002	4.837
2003	5.18
2004	3.944
2005	2.572
2006	1.09
2007	1.182
2008	1.254
2009	1.41
2010	1.517
2011	1.606
2012	1.647
2013	1.758
2014	1.924
2015	2.028
2016	2.048
2017	2.132
2018	2.248
2019	2.164
2020	2.675
2021	2.111
2022	2.354
2023	2.303