Year	% (modeled ILO estimate)
1991	50.363
1992	49.023
1993	47.965
1994	48.487
1995	44.412
1996	51.65
1997	54.437
1998	57.609
1999	56.996
2000	58.823
2001	58.225
2002	57.108
2003	56.215
2004	54.978
2005	53.482
2006	52.403
2007	54.465
2008	57.335
2009	52.575
2010	51.455
2011	50.831
2012	52.221
2013	51.829
2014	50.142
2015	50.375
2016	48.49
2017	48.187
2018	49.097
2019	49.969
2020	49.323
2021	53.333
2022	57.896
2023	58.396