Year	% (modeled ILO estimate)
1991	52.176
1992	51.631
1993	51.086
1994	50.54
1995	50.46
1996	50.159
1997	50.344
1998	48.401
1999	49.551
2000	49.377
2001	49.201
2002	49.044
2003	48.134
2004	47.625
2005	47.595
2006	47.386
2007	46.988
2008	45.874
2009	44.421
2010	44.091
2011	43.825
2012	44.026
2013	43.119
2014	42.831
2015	42.274
2016	41.773
2017	41.499
2018	41.123
2019	40.352
2020	36.312
2021	37.844
2022	37.844
2023	37.815