Year	% (modeled ILO estimate)
1991	40.835
1992	39.965
1993	39.533
1994	39.704
1995	39.039
1996	39.606
1997	39.294
1998	39.096
1999	38.238
2000	38.164
2001	37.507
2002	36.979
2003	36.454
2004	36.391
2005	36.13
2006	36.37
2007	36.24
2008	35.974
2009	34.362
2010	34.42
2011	34.653
2012	34.485
2013	34.637
2014	35.639
2015	36.755
2016	36.83
2017	37.326
2018	37.448
2019	37.139
2020	33.782
2021	34.968
2022	36.806
2023	37.833