Year	% (modeled ILO estimate)
1991	53.555556585808155
1992	52.90645169223671
1993	51.75094685911864
1994	50.75135641100599
1995	49.64378136458538
1996	48.57313177006518
1997	47.5988053241338
1998	46.642594965489316
1999	46.01281927157938
2000	45.25308125265268
2001	44.50615410690998
2002	43.72256983745676
2003	43.03255826467284
2004	42.84078336347217
2005	42.33316626137912
2006	41.81305310254179
2007	41.306309333240485
2008	40.591368184452534
2009	39.53683310090454
2010	38.69790149745196
2011	37.855482806849
2012	37.12444710897838
2013	36.34464694356587
2014	35.57522571133559
2015	34.68164975710421
2016	33.85469428923354
2017	33.2002645266248
2018	32.66142433230675
2019	32.53901244524441
2020	29.974430603972927
2021	30.96335231833979
2022	31.56448921621535
2023	31.966396394149086