Year	% (modeled ILO estimate)
1991	57.66
1992	56.742
1993	55.482
1994	55.433
1995	54.819
1996	60.852
1997	63.772
1998	65.858
1999	64.789
2000	66.034
2001	66.145
2002	65.525
2003	63.665
2004	62.93
2005	60.314
2006	57.434
2007	58.809
2008	61.974
2009	57.885
2010	56.717
2011	55.62
2012	57.025
2013	57.013
2014	54.401
2015	55.904
2016	54.561
2017	53.743
2018	54.35
2019	55.477
2020	55.602
2021	61.005
2022	64.303
2023	65.122