Year	% (modeled ILO estimate)
1991	29.614
1992	29.501
1993	29.368
1994	29.238
1995	29.112
1996	28.868
1997	28.415
1998	28.037
1999	27.654
2000	27.235
2001	27.2
2002	27.111
2003	27.043
2004	26.981
2005	26.924
2006	26.919
2007	27.291
2008	27.666
2009	27.965
2010	28.239
2011	28.487
2012	28.251
2013	27.974
2014	27.654
2015	27.293
2016	26.747
2017	26.166
2018	25.893
2019	25.595
2020	25.076
2021	24.982
2022	25.545
2023	25.584