Year	% (modeled ILO estimate)
1991	69.283
1992	69.202
1993	69.265
1994	69.145
1995	69.163
1996	69.235
1997	69.245
1998	69.298
1999	69.262
2000	69.191
2001	69.299
2002	69.293
2003	69.4
2004	69.271
2005	69.319
2006	69.331
2007	69.401
2008	69.414
2009	69.438
2010	69.471
2011	69.521
2012	69.489
2013	69.467
2014	69.525
2015	69.554
2016	68.907
2017	68.126
2018	67.171
2019	65.798
2020	63.593
2021	64.404
2022	64.598
2023	64.826