Year	% (modeled ILO estimate)
1991	50.857
1992	51.207
1993	51.438
1994	51.6
1995	51.682
1996	52.01
1997	52.202
1998	52.313
1999	52.341
2000	52.277
2001	52.491
2002	52.578
2003	50.852
2004	49.125
2005	47.402
2006	45.697
2007	44.018
2008	42.365
2009	40.741
2010	39.149
2011	37.59
2012	36.065
2013	34.58
2014	33.133
2015	31.725
2016	30.359
2017	29.034
2018	27.75
2019	26.504
2020	26.283
2021	26.538
2022	26.356
2023	26.272