Year	% (modeled ILO estimate)
1991	44.632
1992	42.133
1993	44.428
1994	43.236
1995	45.537
1996	43.48
1997	44.169
1998	47.48
1999	47.518
2000	47.401
2001	47.508
2002	44.528
2003	41.929
2004	43.329
2005	44.013
2006	45.979
2007	44.422
2008	45.222
2009	40.018
2010	39.576
2011	39.25
2012	37.361
2013	34.992
2014	37.903
2015	39.991
2016	39.234
2017	41.323
2018	39.665
2019	39.336
2020	32.95
2021	35.497
2022	36.146
2023	36.889