Year	% (modeled ILO estimate)
1991	52.473
1992	53.357
1993	54.262
1994	53.884
1995	54.204
1996	53.175
1997	53.393
1998	53.863
1999	52.497
2000	51.617
2001	49.738
2002	47.308
2003	47.183
2004	47.201
2005	48.191
2006	48.816
2007	48.709
2008	48.017
2009	46.969
2010	47.142
2011	46.912
2012	47.236
2013	46.379
2014	45.404
2015	44.758
2016	44.215
2017	43.788
2018	43.774
2019	44.907
2020	39.972
2021	44.233
2022	44.366
2023	44.741