Year	% (modeled ILO estimate)
1991	60.398
1992	58.08
1993	54.967
1994	53.861
1995	54.281
1996	53.949
1997	52.893
1998	52.739
1999	54.366
2000	55.204
2001	56.006
2002	55.991
2003	55.847
2004	54.867
2005	54.455
2006	54.969
2007	55.874
2008	55.932
2009	54.634
2010	54.037
2011	55.041
2012	55.366
2013	55.759
2014	56.101
2015	56.701
2016	57.337
2017	57.85
2018	58.272
2019	57.972
2020	56.583
2021	56.564
2022	57.594
2023	58.477