Year	% (modeled ILO estimate)
1991	52.822
1992	53.213
1993	53.417
1994	53.445
1995	53.313
1996	53.297
1997	53.184
1998	53.066
1999	52.991
2000	52.968
2001	52.883
2002	52.75
2003	52.437
2004	52.229
2005	51.984
2006	51.733
2007	51.638
2008	51.185
2009	50.399
2010	50.975
2011	52.474
2012	52.455
2013	51.419
2014	51.974
2015	51.597
2016	49.723
2017	50.823
2018	49.408
2019	52.745
2020	50.124
2021	47.401
2022	50.453
2023	50.382