Year	% (modeled ILO estimate)
1991	25.032
1992	23.714
1993	20.376
1994	19.736
1995	19.924
1996	19.23
1997	20.094
1998	21.083
1999	23.727
2000	26.763
2001	27.372
2002	27.806
2003	28.821
2004	29.275
2005	32.981
2006	34.511
2007	33.967
2008	32.575
2009	26.647
2010	24.304
2011	21.959
2012	18.283
2013	16.29
2014	16.005
2015	17.265
2016	17.232
2017	19.701
2018	20.536
2019	20.138
2020	16.563
2021	19.283
2022	21.321
2023	21.745