Year	% of total labor force (modeled ILO estimate)
1991	18.9
1992	19.544
1993	19.7
1994	18.645
1995	16.825
1996	15.3
1997	13.305
1998	12
1999	12.496
2000	12.93
2001	13.41
2002	14.125
2003	14.701
2004	15.327
2005	15.9
2006	13.232
2007	10.563
2008	7.93
2009	10.581
2010	13.19
2011	10.546
2012	7.85
2013	8.042
2014	8.131
2015	8.316
2016	8.418
2017	8.518
2018	5.031
2019	5.539
2020	6.032
2021	5.195
2022	5.993
2023	5.913