Year	% (modeled ILO estimate)
1991	62.536
1992	62.701
1993	62.861
1994	63.021
1995	63.18
1996	63.339
1997	63.494
1998	63.647
1999	63.803
2000	63.96
2001	64.115
2002	63.909
2003	63.702
2004	63.494
2005	63.284
2006	63.078
2007	62.87
2008	62.661
2009	62.448
2010	62.242
2011	62.038
2012	61.418
2013	60.789
2014	60.156
2015	59.057
2016	57.965
2017	56.884
2018	59.701
2019	59.944
2020	58.909
2021	60.62
2022	61.509
2023	61.467