Year	% (modeled ILO estimate)
1991	62.422
1992	60.249
1993	56.054
1994	51.397
1995	49.223
1996	46.964
1997	43.427
1998	44.328
1999	34.599
2000	31.428
2001	32.87
2002	34.276
2003	38.816
2004	44.119
2005	44.399
2006	45.256
2007	39.472
2008	39.496
2009	39.512
2010	38.819
2011	34.881
2012	33.171
2013	33.716
2014	37.609
2015	38.228
2016	39.759
2017	39.638
2018	39.671
2019	39.518
2020	37.908
2021	38.465
2022	38.712
2023	38.652