Year	% (modeled ILO estimate)
1991	57.281
1992	55.317
1993	52.489
1994	49.268
1995	46.462
1996	46.642
1997	47.227
1998	48.329
1999	49.513
2000	50.243
2001	49.811
2002	49.216
2003	48.416
2004	47.588
2005	46.929
2006	46.493
2007	46.202
2008	46.023
2009	45.846
2010	45.59
2011	45.395
2012	45.081
2013	44.7
2014	44.34
2015	44.046
2016	43.612
2017	43.309
2018	42.619
2019	41.847
2020	47.76
2021	38.7
2022	39.892
2023	40.58