Year	% (modeled ILO estimate)
1991	56.612
1992	56.646
1993	57.367
1994	58.113
1995	58.916
1996	59.706
1997	60.542
1998	61.371
1999	62.243
2000	63.137
2001	64.066
2002	65.014
2003	65.414
2004	65.821
2005	66.214
2006	66.635
2007	67.066
2008	67.522
2009	67.929
2010	68.301
2011	67.583
2012	66.038
2013	64.496
2014	62.825
2015	60.949
2016	59.014
2017	57.121
2018	55.304
2019	55.403
2020	54.758
2021	53.672
2022	55.401
2023	55.767