Year	% (modeled ILO estimate)
1991	61.333
1992	62.088
1993	66.106
1994	62.057
1995	58.314
1996	54.666
1997	54.192
1998	53.741
1999	52.637
2000	53.736
2001	55.788
2002	54.723
2003	53.21
2004	55.044
2005	55.926
2006	56.497
2007	57.132
2008	56.775
2009	55.839
2010	53.945
2011	54.274
2012	53.219
2013	49.971
2014	49.308
2015	51.513
2016	51.159
2017	52.036
2018	48.344
2019	45.853
2020	45.213
2021	45.996
2022	47.701
2023	48.002