Year	% (modeled ILO estimate)
1991	52.69
1992	52.001
1993	52.413
1994	52.925
1995	53.226
1996	52.543
1997	51.968
1998	52.605
1999	51.916
2000	51.924
2001	52.395
2002	49.447
2003	49.128
2004	48.44
2005	49.575
2006	49.914
2007	51.141
2008	51.523
2009	49.579
2010	47.921
2011	50.521
2012	49.945
2013	49.969
2014	49.952
2015	50.329
2016	49.929
2017	49.747
2018	49.778
2019	49.415
2020	48.944
2021	48.597
2022	49.489
2023	49.443