Year	% (modeled ILO estimate)
1991	49.553
1992	50.368
1993	51.232
1994	49.916
1995	47.904
1996	48.078
1997	49.314
1998	50.263
1999	50.277
2000	48.92
2001	47.266
2002	44.431
2003	43.832
2004	43.332
2005	44.875
2006	45.404
2007	45.234
2008	44.368
2009	42.25
2010	42.56
2011	42.32
2012	42.806
2013	42.02
2014	41.122
2015	40.925
2016	40.829
2017	40.773
2018	40.777
2019	41.666
2020	36.736
2021	40.754
2022	41.472
2023	42.124