Year	% (modeled ILO estimate)
1991	21.83
1992	21.614
1993	21.394
1994	21.22
1995	20.496
1996	19.979
1997	19.416
1998	19.006
1999	18.535
2000	18.133
2001	17.756
2002	17.098
2003	16.324
2004	15.692
2005	15.522
2006	14.742
2007	15.302
2008	15.083
2009	13.608
2010	13.789
2011	11.469
2012	13.437
2013	13.55
2014	11.977
2015	11.471
2016	12.893
2017	12.158
2018	12.263
2019	11.668
2020	10.083
2021	10.424
2022	10.74
2023	10.874