Year	% (modeled ILO estimate)
1991	62.627
1992	61.515
1993	60.358
1994	59.221
1995	58.027
1996	56.865
1997	55.654
1998	51.662
1999	48.687
2000	48.842
2001	47.864
2002	46.385
2003	44.91
2004	45.265
2005	45.784
2006	40.616
2007	42.258
2008	40.813
2009	40.863
2010	38.903
2011	39.635
2012	38.886
2013	34.887
2014	34.849
2015	34.37
2016	34.263
2017	33.456
2018	33.921
2019	33.33
2020	33.152
2021	32.41
2022	32.791
2023	33.083