Year	% (modeled ILO estimate)
1991	70.99
1992	70.524
1993	70.079
1994	69.551
1995	68.938
1996	68.306
1997	65.558
1998	62.305
1999	58.648
2000	55.36
2001	59.666
2002	58.041
2003	56.864
2004	56.71
2005	56.726
2006	56.744
2007	56.765
2008	59.108
2009	61.431
2010	60.665
2011	60.116
2012	58.518
2013	61.038
2014	60.766
2015	62.526
2016	59.897
2017	59.936
2018	58.98
2019	60.393
2020	55.707
2021	48.015
2022	45.757
2023	48.006