Year	% (modeled ILO estimate)
1991	42.725
1992	41.88
1993	41.057
1994	40.532
1995	39.987
1996	39.218
1997	39.131
1998	39.762
1999	45.574
2000	44.179
2001	42.536
2002	43.688
2003	44.288
2004	44.56
2005	44.484
2006	45.273
2007	44.298
2008	43.189
2009	42.232
2010	41.34
2011	40.868
2012	40.371
2013	40.331
2014	40.023
2015	39.9
2016	39.73
2017	40.474
2018	40.842
2019	39.006
2020	38.637
2021	38.006
2022	38.357
2023	38.489