Year	% (modeled ILO estimate)
1991	51.35
1992	51.001
1993	50.972
1994	51.171
1995	51.681
1996	51.88
1997	52.101
1998	52.165
1999	51.859
2000	51.691
2001	51.685
2002	51.95
2003	52.056
2004	52.012
2005	52.087
2006	51.291
2007	50.791
2008	50.059
2009	49.609
2010	49.167
2011	49.117
2012	48.956
2013	48.69
2014	48.455
2015	48.306
2016	48.428
2017	48.531
2018	48.633
2019	48.824
2020	45.498
2021	45.888
2022	48.796
2023	49.299