Year	% (modeled ILO estimate)
1991	38.811
1992	38.219
1993	37.828
1994	37.314
1995	37.055
1996	37.204
1997	35.752
1998	40.412
1999	39.833
2000	38.807
2001	36.282
2002	36.009
2003	34.192
2004	36.32
2005	33.539
2006	31.989
2007	30.9
2008	29.982
2009	30.627
2010	30.063
2011	29.245
2012	29.404
2013	28.651
2014	28.02
2015	25.87
2016	24.603
2017	24.944
2018	23.215
2019	22.306
2020	21.015
2021	20.806
2022	23.493
2023	24.849