Year	% (modeled ILO estimate)
1991	43.343
1992	42.858
1993	42.281
1994	41.579
1995	40.75
1996	40.12
1997	39.359
1998	38.552
1999	37.825
2000	37.245
2001	36.876
2002	36.6
2003	36.492
2004	36.53
2005	36.685
2006	36.423
2007	36.201
2008	36.024
2009	35.899
2010	35.802
2011	35.805
2012	35.871
2013	35.925
2014	35.882
2015	35.702
2016	35.389
2017	34.975
2018	34.474
2019	33.923
2020	33.278
2021	33.205
2022	33.922
2023	34.124