Year	% (modeled ILO estimate)
1991	55.907
1992	55.8
1993	56.138
1994	56.531
1995	57.138
1996	57.638
1997	58.242
1998	58.837
1999	59.358
2000	57.239
2001	57.341
2002	57.56
2003	57.743
2004	57.981
2005	58.211
2006	61.346
2007	58.855
2008	59.896
2009	60.323
2010	60.268
2011	60.204
2012	56.016
2013	56.996
2014	59.41
2015	52.531
2016	54.646
2017	56.742
2018	61.288
2019	58.307
2020	53.5
2021	54.312
2022	56.099
2023	57.064