Year	% (modeled ILO estimate)
1991	35.226
1992	35.513
1993	35.561
1994	35.307
1995	35.013
1996	34.555
1997	34.173
1998	34.556
1999	34.445
2000	34.148
2001	34.016
2002	33.787
2003	33.375
2004	33.057
2005	33.584
2006	33.061
2007	32.363
2008	31.638
2009	32.319
2010	32.17
2011	33.347
2012	32.897
2013	32.077
2014	32.875
2015	31.43
2016	30.351
2017	27.564
2018	27.248
2019	27.039
2020	23.181
2021	23.521
2022	25.798
2023	26.236