Year	% (modeled ILO estimate)
1991	53.513
1992	51.757
1993	53.177
1994	52.414
1995	53.268
1996	49.341
1997	50.833
1998	53.599
1999	51.261
2000	50.389
2001	51.388
2002	49.747
2003	50.633
2004	47.661
2005	49.046
2006	49.506
2007	51.416
2008	49.115
2009	47.376
2010	44.65
2011	43.61
2012	48.161
2013	47.744
2014	48.208
2015	45.731
2016	42.608
2017	42.63
2018	45.63
2019	45.312
2020	43.926
2021	45.414
2022	42.968
2023	39.099