Year	% (modeled ILO estimate)
1991	53.472
1992	54.794
1993	54.483
1994	54.673
1995	54.961
1996	55.877
1997	57.582
1998	58.982
1999	60.218
2000	61.796
2001	62.819
2002	63.226
2003	62.425
2004	61.882
2005	59.707
2006	60.401
2007	61.862
2008	62.926
2009	62.593
2010	61.604
2011	61.326
2012	61.217
2013	60.248
2014	59.612
2015	59.957
2016	60.238
2017	60.912
2018	61.808
2019	62.59
2020	62.084
2021	62.201
2022	63.118
2023	63.735