Year	% (modeled ILO estimate)
1991	42.869
1992	41.179
1993	41.938
1994	43.502
1995	44.599
1996	46.928
1997	47.025
1998	47.093
1999	48.323
2000	48.8
2001	49.055
2002	47.888
2003	48.517
2004	52.431
2005	54.544
2006	54.632
2007	56.075
2008	54.416
2009	53.308
2010	50.093
2011	50.918
2012	48.802
2013	49.472
2014	48.842
2015	48.313
2016	43.023
2017	42.675
2018	42.338
2019	42.05
2020	37.453
2021	36.223
2022	36.653
2023	37.592