Year	% (modeled ILO estimate)
1991	34.942
1992	34.754
1993	34.345
1994	34.452
1995	34.614
1996	34.095
1997	33.634
1998	33.435
1999	33.267
2000	33.076
2001	32.838
2002	32.675
2003	32.521
2004	32.384
2005	32.222
2006	32.083
2007	31.896
2008	32.143
2009	32.404
2010	32.802
2011	33.273
2012	33.838
2013	34.281
2014	34.671
2015	34.992
2016	35.402
2017	35.501
2018	35.555
2019	35.669
2020	34.31
2021	34.872
2022	35.637
2023	35.998