Year	% (modeled ILO estimate)
1991	26.969
1992	26.828
1993	26.804
1994	26.708
1995	27.217
1996	27.765
1997	28.308
1998	28.874
1999	29.438
2000	28.807
2001	28.171
2002	27.575
2003	26.979
2004	26.423
2005	25.893
2006	25.36
2007	24.842
2008	24.33
2009	23.853
2010	23.42
2011	22.088
2012	20.974
2013	19.939
2014	19.098
2015	14.753
2016	14.73
2017	14.75
2018	15.017
2019	15.121
2020	14.447
2021	14.568
2022	14.913
2023	14.943