Year	% (modeled ILO estimate)
1991	55.746
1992	55.716
1993	55.62
1994	55.472
1995	55.277
1996	55.421
1997	55.5
1998	55.568
1999	55.663
2000	55.76
2001	56.09
2002	55.947
2003	55.805
2004	55.539
2005	55.382
2006	56.321
2007	57.13
2008	57.781
2009	58.359
2010	58.825
2011	59.328
2012	53.861
2013	52.795
2014	51.735
2015	51.655
2016	51.637
2017	51.556
2018	51.414
2019	51.239
2020	50.703
2021	50.55
2022	49.77
2023	49.921