Year	% (modeled ILO estimate)
1991	54.688
1992	54.669
1993	56.285
1994	56.55
1995	59.394
1996	58.117
1997	57.482
1998	56.931
1999	54.49
2000	55.175
2001	55.961
2002	56.779
2003	57.587
2004	58.413
2005	58.998
2006	59.558
2007	60.091
2008	60.664
2009	61.221
2010	62.476
2011	62.443
2012	62.236
2013	63.609
2014	64.026
2015	63.85
2016	63.309
2017	63.297
2018	63.261
2019	63.312
2020	59.049
2021	59.886
2022	60.102
2023	60.462