Year	% (modeled ILO estimate)
1991	37.141
1992	38.308
1993	38.777
1994	38.68
1995	38.14
1996	37.936
1997	37.531
1998	37.166
1999	36.855
2000	36.739
2001	36.438
2002	35.965
2003	34.956
2004	34.246
2005	33.511
2006	32.777
2007	32.075
2008	30.317
2009	28.726
2010	27.155
2011	29.221
2012	29.493
2013	28.427
2014	26.92
2015	25.578
2016	22.253
2017	22.19
2018	24.114
2019	29.546
2020	28.084
2021	23.42
2022	26.896
2023	27.838