Year	% (modeled ILO estimate)
1991	25.267
1992	25.155
1993	25.117
1994	24.902
1995	24.816
1996	24.659
1997	24.492
1998	24.236
1999	24
2000	23.758
2001	23.455
2002	23.116
2003	22.901
2004	22.636
2005	22.409
2006	22.283
2007	21.99
2008	21.68
2009	21.277
2010	21.116
2011	21.014
2012	20.903
2013	19.927
2014	18.971
2015	18.056
2016	17.129
2017	16.287
2018	15.864
2019	15.482
2020	14.794
2021	14.866
2022	14.862
2023	15.038