Year	% (modeled ILO estimate)
1991	29.548
1992	29.418
1993	28.885
1994	28.465
1995	27.962
1996	27.946
1997	27.813
1998	27.594
1999	27.251
2000	27.031
2001	27.157
2002	27.46
2003	27.519
2004	27.595
2005	27.486
2006	27.706
2007	27.844
2008	27.981
2009	28.122
2010	28.234
2011	28.387
2012	26.453
2013	24.658
2014	24.475
2015	24.261
2016	23.962
2017	23.687
2018	23.467
2019	23.307
2020	23.17
2021	23.857
2022	24.493
2023	24.921