Year	% (modeled ILO estimate)
1991	29.961
1992	29.921
1993	30.088
1994	30.186
1995	30.31
1996	30.385
1997	30.419
1998	30.519
1999	30.628
2000	30.665
2001	27.624
2002	27.465
2003	27.486
2004	28.166
2005	27.609
2006	27.642
2007	27.988
2008	28.307
2009	28.341
2010	28.825
2011	29.076
2012	29.431
2013	29.323
2014	29.4
2015	29.439
2016	29.44
2017	29.372
2018	29.393
2019	29.378
2020	28.434
2021	28.865
2022	29.242
2023	29.409