Year	% (modeled ILO estimate)
1991	53.721
1992	56.037
1993	54.225
1994	53.779
1995	54.533
1996	54.161
1997	56.969
1998	60.366
1999	62.745
2000	68.398
2001	70.384
2002	70.584
2003	68.757
2004	66.261
2005	59.355
2006	60.481
2007	63.079
2008	64.308
2009	62.903
2010	60.719
2011	61.292
2012	61.13
2013	60.104
2014	58.786
2015	60.793
2016	60.836
2017	62.313
2018	63.946
2019	65.298
2020	62.478
2021	63.032
2022	63.867
2023	65.174