Year	% (modeled ILO estimate)
1991	68.921
1992	68.243
1993	67.946
1994	67.653
1995	67.275
1996	66.958
1997	66.415
1998	65.292
1999	64.175
2000	63.067
2001	61.96
2002	60.854
2003	59.764
2004	58.693
2005	57.619
2006	56.545
2007	55.467
2008	55.061
2009	54.619
2010	54.168
2011	53.721
2012	53.277
2013	53.846
2014	54.403
2015	51.516
2016	48.587
2017	48.972
2018	48.917
2019	48.369
2020	44.949
2021	45.477
2022	44.884
2023	45.492