Year	% (modeled ILO estimate)
1991	36.362
1992	36.825
1993	36.359
1994	35.52
1995	35.455
1996	35.31
1997	35.355
1998	35.277
1999	33.992
2000	33.655
2001	33.961
2002	32.625
2003	30.974
2004	32.12
2005	33.713
2006	32.538
2007	31.289
2008	30.672
2009	29.907
2010	28.484
2011	27.834
2012	27.249
2013	26.149
2014	25.077
2015	24.035
2016	23.025
2017	21.268
2018	19.496
2019	16.441
2020	14.639
2021	15.346
2022	15.606
2023	15.963