Year	% (modeled ILO estimate)
1991	21.9
1992	21.424
1993	21.319
1994	21.035
1995	20.818
1996	20.833
1997	21.025
1998	21.298
1999	21.683
2000	21.936
2001	22.442
2002	22.769
2003	22.879
2004	23.135
2005	23.526
2006	23.691
2007	24.003
2008	24.587
2009	24.992
2010	24.668
2011	24.576
2012	24.626
2013	24.507
2014	24.45
2015	23.455
2016	22.435
2017	21.513
2018	20.449
2019	21.059
2020	18.462
2021	19.816
2022	21.864
2023	21.926