Year	% (modeled ILO estimate)
1991	41.431
1992	40.638
1993	39.718
1994	38.886
1995	37.99
1996	37.086
1997	36.507
1998	37.819
1999	37.363
2000	36.57
2001	36.785
2002	36.379
2003	35.918
2004	35.336
2005	34.929
2006	34.496
2007	33.98
2008	33.86
2009	33.03
2010	32.03
2011	33.14
2012	32.84
2013	33.89
2014	34.49
2015	33.73
2016	34.56
2017	34.93
2018	35.37
2019	37.65
2020	34.88
2021	35.181
2022	37.328
2023	37.026