Year	% (modeled ILO estimate)
1991	59.828
1992	61.028
1993	62.391
1994	64.428
1995	65.02
1996	64.421
1997	63.588
1998	63.472
1999	63.2
2000	62.741
2001	62.284
2002	62.302
2003	61.719
2004	61.161
2005	61.204
2006	60.956
2007	60.269
2008	59.625
2009	59.425
2010	59.476
2011	58.328
2012	55.342
2013	52.927
2014	52.787
2015	52.901
2016	52.049
2017	49.214
2018	50.15
2019	49.553
2020	50.522
2021	50.378
2022	51.128
2023	51.212