Year	% (modeled ILO estimate)
1991	27.884
1992	27.766
1993	27.617
1994	27.423
1995	27.096
1996	27.008
1997	26.83
1998	26.563
1999	26.267
2000	25.993
2001	25.8
2002	25.636
2003	25.41
2004	25.206
2005	25.027
2006	24.949
2007	24.643
2008	24.352
2009	24.077
2010	23.817
2011	23.57
2012	23.335
2013	23.11
2014	22.891
2015	22.677
2016	26.298
2017	20.546
2018	16.82
2019	19.368
2020	19.135
2021	19.142
2022	18.917
2023	18.853