Year	% of total labor force (modeled ILO estimate)
1991	2.1
1992	2.438
1993	2.686
1994	2.995
1995	3.239
1996	3.51
1997	3.775
1998	4.123
1999	4.487
2000	4.732
2001	4.96
2002	4.978
2003	5.04
2004	5.165
2005	5.214
2006	5.323
2007	5.426
2008	5.538
2009	5.646
2010	5.62
2011	5.68
2012	8.752
2013	8.772
2014	8.72
2015	8.9
2016	9.062
2017	9.4
2018	9.512
2019	9.601
2020	10.214
2021	10.368
2022	9.923
2023	9.747