Year	% (modeled ILO estimate)
1991	27.116
1992	27.101
1993	27.125
1994	27.186
1995	27.272
1996	27.145
1997	27.047
1998	26.982
1999	26.939
2000	26.919
2001	26.645
2002	26.348
2003	26.027
2004	25.685
2005	25.335
2006	25.139
2007	24.873
2008	24.546
2009	24.196
2010	23.862
2011	23.617
2012	23.506
2013	23.478
2014	23.46
2015	23.399
2016	23.564
2017	23.661
2018	23.697
2019	23.697
2020	22.326
2021	22.588
2022	23.494
2023	23.554