Year	% (modeled ILO estimate)
1991	49.281
1992	48.811
1993	48.393
1994	48.008
1995	47.596
1996	47.181
1997	46.787
1998	46.392
1999	46.001
2000	45.613
2001	45.215
2002	44.804
2003	43.141
2004	45.349
2005	43.353
2006	40.149
2007	41.637
2008	43.159
2009	42.389
2010	40.748
2011	37.77
2012	34.609
2013	34.648
2014	38.44
2015	38.083
2016	41.814
2017	40.777
2018	37.778
2019	38.641
2020	39.016
2021	38.143
2022	39.726
2023	36.391