Year	% (modeled ILO estimate)
1991	25.225
1992	25.828
1993	26.419
1994	27.078
1995	27.558
1996	27.92
1997	27.942
1998	26.101
1999	23.933
2000	21.618
2001	21.345
2002	21.971
2003	20.763
2004	21.854
2005	21.436
2006	21.842
2007	22.259
2008	21.481
2009	21.779
2010	20.468
2011	17.231
2012	14.727
2013	12.392
2014	15.312
2015	15.764
2016	22.231
2017	21.845
2018	20.384
2019	21.928
2020	19.033
2021	20.131
2022	23.106
2023	18.547