Year	% (modeled ILO estimate)
1991	75.849
1992	72.404
1993	68.587
1994	67.893
1995	64.233
1996	63.084
1997	61.543
1998	61.727
1999	58.346
2000	55.963
2001	56.59
2002	56.707
2003	58.008
2004	57.477
2005	58.147
2006	63.031
2007	64.326
2008	64.548
2009	56.421
2010	53.89
2011	59.01
2012	60.729
2013	62.01
2014	63.267
2015	64.906
2016	65.001
2017	66.713
2018	67.208
2019	67.443
2020	65.389
2021	64.712
2022	66.512
2023	66.406