Year	% (modeled ILO estimate)
1991	65.702
1992	64.921
1993	63.544
1994	62.03
1995	60.98
1996	61.421
1997	62.138
1998	62.637
1999	63.083
2000	63.342
2001	63.104
2002	63.014
2003	62.407
2004	61.909
2005	61.431
2006	61.36
2007	61.193
2008	61.131
2009	60.949
2010	60.792
2011	60.596
2012	60.476
2013	60.188
2014	59.932
2015	59.767
2016	59.547
2017	59.313
2018	60.338
2019	58.765
2020	61.707
2021	55.068
2022	57.051
2023	57.398