Year	% (modeled ILO estimate)
1991	21.763
1992	19.292
1993	21.787
1994	22.456
1995	19.687
1996	19.408
1997	19.653
1998	28.297
1999	23.617
2000	21.605
2001	20.934
2002	18.911
2003	18.334
2004	17.355
2005	16.943
2006	19.276
2007	18.999
2008	19.268
2009	18.284
2010	18.922
2011	17.612
2012	17.57
2013	17.51
2014	16.564
2015	18.468
2016	16.632
2017	18.315
2018	14.638
2019	15.683
2020	12.873
2021	14.04
2022	14.172
2023	13.868