Year	% of total labor force (modeled ILO estimate)
1991	15.929
1992	17.697
1993	22.156
1994	24.209
1995	22.675
1996	22.142
1997	20.698
1998	18.673
1999	15.475
2000	13.785
2001	10.348
2002	11.146
2003	11.283
2004	11.09
2005	9.146
2006	8.452
2007	8.232
2008	11.255
2009	17.857
2010	19.86
2011	21.391
2012	24.788
2013	26.094
2014	24.442
2015	22.058
2016	19.635
2017	17.224
2018	15.255
2019	14.104
2020	15.532
2021	14.781
2022	12.917
2023	12.144