Year	% (modeled ILO estimate)
1991	30.726
1992	30.284
1993	30.175
1994	29.918
1995	29.755
1996	29.742
1997	29.863
1998	29.999
1999	30.289
2000	30.478
2001	30.909
2002	31.187
2003	31.296
2004	31.535
2005	31.871
2006	32.017
2007	32.293
2008	32.776
2009	33.105
2010	32.308
2011	31.711
2012	31.204
2013	30.506
2014	29.85
2015	28.735
2016	27.555
2017	26.449
2018	22.483
2019	24.65
2020	22.114
2021	23.93
2022	26.385
2023	26.712