Year	% (modeled ILO estimate)
1991	46.355
1992	46.933
1993	48.689
1994	48.141
1995	47.69
1996	44.564
1997	44.202
1998	41.301
1999	36.314
2000	35.805
2001	41.467
2002	41.176
2003	42.534
2004	40.437
2005	40.629
2006	39.364
2007	38.027
2008	37.357
2009	39.9
2010	40.039
2011	41.538
2012	42.849
2013	42.331
2014	42.137
2015	42.49
2016	40.903
2017	40.119
2018	38.742
2019	37.071
2020	34.138
2021	36.358
2022	35.096
2023	36