Year	% (modeled ILO estimate)
1991	59.607
1992	59.711
1993	59.872
1994	59.822
1995	59.657
1996	59.616
1997	59.546
1998	59.438
1999	59.305
2000	59.14
2001	59.115
2002	59
2003	58.915
2004	58.787
2005	58.653
2006	58.686
2007	58.687
2008	58.691
2009	58.737
2010	58.743
2011	57.312
2012	56.92
2013	56.524
2014	56.124
2015	55.719
2016	55.312
2017	54.901
2018	54.486
2019	54.067
2020	53.336
2021	53.551
2022	52.678
2023	52.595