Year	% (modeled ILO estimate)
1991	57.303
1992	56.294
1993	55.484
1994	55.782
1995	56.22
1996	56.638
1997	57.486
1998	57.931
1999	57.945
2000	58.468
2001	58.657
2002	58.676
2003	58.894
2004	59.04
2005	59.312
2006	59.336
2007	59.231
2008	59.233
2009	57.843
2010	57.493
2011	57.319
2012	57.557
2013	57.902
2014	58.841
2015	59.415
2016	59.903
2017	60.186
2018	60.557
2019	60.846
2020	59.991
2021	59.171
2022	59.873
2023	59.627