Year	% (modeled ILO estimate)
1991	59.083
1992	60.002
1993	58.52
1994	57.6
1995	56.557
1996	55.491
1997	54.658
1998	48.21
1999	45.034
2000	45.762
2001	44.22
2002	43.875
2003	42.49
2004	43.245
2005	43.665
2006	38.448
2007	40.401
2008	38.864
2009	38.241
2010	37.673
2011	38.075
2012	37.626
2013	34.347
2014	33.481
2015	32.99
2016	32.611
2017	31.583
2018	32.305
2019	31.447
2020	31.113
2021	29.939
2022	30.31
2023	30.557