Year	% (modeled ILO estimate)
1991	61.775
1992	61.945
1993	59.688
1994	59.688
1995	60.921
1996	62.669
1997	64.339
1998	66.403
1999	62.776
2000	64.255
2001	59.022
2002	63.798
2003	57.917
2004	59.298
2005	60.565
2006	64.142
2007	63.996
2008	61.129
2009	59.409
2010	55.5
2011	54.202
2012	51.899
2013	51.126
2014	51.234
2015	52.278
2016	54.543
2017	53.909
2018	55.181
2019	55.761
2020	53.951
2021	53.411
2022	56.312
2023	58.045