Year	% (modeled ILO estimate)
1991	56.455
1992	57.271
1993	59.286
1994	60.691
1995	61.435
1996	62.231
1997	63.912
1998	62.447
1999	61.215
2000	60.701
2001	60.476
2002	59.842
2003	57.72
2004	59.364
2005	60.997
2006	63.1
2007	66.139
2008	67.463
2009	67.269
2010	67.822
2011	68.869
2012	69.128
2013	69.306
2014	69.903
2015	69.333
2016	68.346
2017	67.999
2018	68.266
2019	68
2020	65.714
2021	66.667
2022	66.109
2023	66.811