Year	% (modeled ILO estimate)
1991	45.593
1992	45.396
1993	45.431
1994	45.543
1995	45.694
1996	45.765
1997	45.907
1998	46.48
1999	47.051
2000	43.132
2001	43.223
2002	43.304
2003	43.389
2004	43.479
2005	43.575
2006	47.883
2007	43.441
2008	44.597
2009	45.243
2010	45.048
2011	44.851
2012	36.086
2013	39.273
2014	42.969
2015	34.567
2016	36.925
2017	38.206
2018	44.218
2019	41.846
2020	42.172
2021	39.142
2022	39.081
2023	40.012