Year	% (modeled ILO estimate)
1991	28.51
1992	28.033
1993	27.442
1994	26.636
1995	26.232
1996	26.017
1997	25.797
1998	25.466
1999	24.917
2000	24.897
2001	24.741
2002	24.793
2003	24.4
2004	24.248
2005	24.268
2006	24.349
2007	23.862
2008	23.728
2009	23.752
2010	24.106
2011	24.211
2012	24.34
2013	24.06
2014	24.243
2015	23.744
2016	23.202
2017	22.602
2018	22.279
2019	22.333
2020	20.267
2021	20.603
2022	22.885
2023	23.676