Year	% (modeled ILO estimate)
1991	52.451
1992	52.211
1993	52.284
1994	53.011
1995	53.552
1996	55.316
1997	56.795
1998	58.671
1999	59.162
2000	59.254
2001	59.379
2002	59.972
2003	58.76
2004	58.918
2005	58.34
2006	59.005
2007	60.597
2008	61.757
2009	60.94
2010	59.916
2011	59.789
2012	59.962
2013	59.591
2014	59.408
2015	58.902
2016	58.567
2017	58.131
2018	58.347
2019	58.547
2020	57.748
2021	59.16
2022	59.953
2023	59.688