Year	% (modeled ILO estimate)
1991	52.613
1992	52.544
1993	52.432
1994	52.369
1995	50.612
1996	49.314
1997	48.662
1998	47.346
1999	47.007
2000	47.018
2001	47.283
2002	47.686
2003	48.171
2004	48.348
2005	49.07
2006	49.142
2007	49.556
2008	49.24
2009	48.308
2010	48.296
2011	48.104
2012	47.941
2013	47.795
2014	46.853
2015	46.315
2016	46.24
2017	45.973
2018	45.855
2019	45.391
2020	43.78
2021	42.943