Year	% (modeled ILO estimate)
1991	46.629
1992	46.951
1993	47.338
1994	47.705
1995	47.965
1996	47.906
1997	47.927
1998	47.677
1999	46.995
2000	46.988
2001	46.917
2002	46.493
2003	47.48
2004	45.567
2005	42.436
2006	40.867
2007	39.325
2008	39.032
2009	42.796
2010	42.624
2011	43.104
2012	44.263
2013	43.281
2014	42.723
2015	42.457
2016	42.119
2017	41.469
2018	40.001
2019	39.305
2020	39.09
2021	40.49
2022	37.243
2023	37.47