Year	% (modeled ILO estimate)
1991	62.404
1992	62.612
1993	62.973
1994	62.821
1995	62.638
1996	62.459
1997	62.331
1998	62.141
1999	61.952
2000	61.778
2001	61.544
2002	61.269
2003	60.953
2004	60.714
2005	60.493
2006	60.666
2007	60.804
2008	60.916
2009	60.789
2010	60.737
2011	60.711
2012	60.754
2013	60.752
2014	60.713
2015	60.723
2016	60.728
2017	59.617
2018	61.856
2019	56.825
2020	39.006
2021	50.471
2022	50.328
2023	52.01