Year	% (modeled ILO estimate)
1991	58.542
1992	58.182
1993	56.852
1994	56.463
1995	56.714
1996	56.406
1997	56.365
1998	56.047
1999	56.65
2000	58.234
2001	57.093
2002	56.595
2003	55.798
2004	56.292
2005	56.719
2006	56.35
2007	57.005
2008	56.914
2009	55.702
2010	55.867
2011	55.47
2012	55.17
2013	54.507
2014	53.886
2015	53.531
2016	53.976
2017	54.968
2018	55.343
2019	55.745
2020	55.14
2021	55.202
2022	56.061
2023	55.792