Year	% (modeled ILO estimate)
1991	34.842
1992	34.821
1993	34.744
1994	34.629
1995	34.503
1996	34.384
1997	34.307
1998	34.28
1999	34.301
2000	34.355
2001	34.516
2002	34.706
2003	34.897
2004	35.075
2005	35.236
2006	35.023
2007	34.834
2008	34.678
2009	34.572
2010	34.514
2011	34.672
2012	34.87
2013	34.962
2014	35.055
2015	34.198
2016	33.344
2017	32.488
2018	31.443
2019	30.372
2020	28.532
2021	28.095
2022	28.234
2023	27.264