Year	% (modeled ILO estimate)
1991	52.372
1992	52.439
1993	51.865
1994	52.857
1995	53.259
1996	53.115
1997	53.721
1998	55.299
1999	53.53
2000	52.562
2001	52.287
2002	49.985
2003	49.262
2004	51.759
2005	52.363
2006	55.261
2007	57.821
2008	58.87
2009	59.729
2010	59.678
2011	61.854
2012	61.013
2013	60.664
2014	61.556
2015	60.067
2016	59.545
2017	59.052
2018	58.369
2019	58.139
2020	54.923
2021	57.129
2022	58.245
2023	58.468