Year	% (modeled ILO estimate)
1991	39.329
1992	39.114
1993	37.476
1994	35.656
1995	35.339
1996	32.794
1997	32.543
1998	30.365
1999	30.202
2000	31.104
2001	31.812
2002	32.62
2003	33.41
2004	34.08
2005	34.824
2006	35.453
2007	35.992
2008	35.68
2009	35.096
2010	34.522
2011	34.615
2012	34.232
2013	33.865
2014	33.287
2015	32.886
2016	32.62
2017	31.946
2018	31.991
2019	32.053
2020	31.016
2021	30.732
2022	31.182
2023	31.273