Year	% (modeled ILO estimate)
1991	55.962
1992	54.646
1993	55.286
1994	58.523
1995	62.169
1996	61.198
1997	59.771
1998	56.78
1999	56.259
2000	56.004
2001	57.791
2002	58.609
2003	58.3
2004	59.559
2005	59.16
2006	60.7
2007	60.111
2008	57.895
2009	53.323
2010	50.946
2011	50.475
2012	50.12
2013	50.564
2014	53.694
2015	54.613
2016	55.922
2017	56.804
2018	56.268
2019	56.536
2020	55.925
2021	58.257
2022	61.136
2023	61.917