Year	% (modeled ILO estimate)
1991	45.433
1992	45.437
1993	44.851
1994	45.616
1995	45.828
1996	46.274
1997	46.043
1998	46.099
1999	45.987
2000	46.277
2001	45.888
2002	46.297
2003	46.866
2004	46.961
2005	47.315
2006	48.114
2007	48.202
2008	48.532
2009	47.804
2010	46.193
2011	42.758
2012	39.067
2013	37.381
2014	37.706
2015	38.577
2016	39.261
2017	40.214
2018	41.165
2019	42.28
2020	42.128
2021	42.952
2022	45.357
2023	46.281