Year	% (modeled ILO estimate)
1991	28.43
1992	28.279
1993	26.28
1994	25.249
1995	23.957
1996	24.157
1997	23.715
1998	24.595
1999	21.679
2000	22.046
2001	21.926
2002	19.708
2003	18.288
2004	18.292
2005	19.643
2006	21.003
2007	22.372
2008	23.709
2009	23.179
2010	22.097
2011	20.004
2012	19.881
2013	19.529
2014	21.364
2015	21.302
2016	23.746
2017	25.177
2018	27.007
2019	27.809
2020	24.229
2021	22.831
2022	23.451
2023	24.434