Year	% (modeled ILO estimate)
1991	63.532
1992	64.589
1993	65.597
1994	64.386
1995	62.839
1996	59.8
1997	60.539
1998	62.161
1999	57.017
2000	58.52
2001	56.814
2002	55.027
2003	56.087
2004	54.083
2005	53.71
2006	54.36
2007	57.831
2008	53.662
2009	48.399
2010	46.472
2011	43.415
2012	46.206
2013	44.525
2014	45.381
2015	42.993
2016	42.496
2017	42.685
2018	43.489
2019	37.251
2020	33.28
2021	33.076
2022	35.681
2023	34.28