Year	% (modeled ILO estimate)
1991	26.27
1992	25.272
1993	23.962
1994	23.361
1995	22.635
1996	22.427
1997	21.867
1998	20.347
1999	18.958
2000	17.663
2001	16.645
2002	15.95
2003	15.391
2004	14.871
2005	14.314
2006	13.774
2007	13.223
2008	13.188
2009	13.205
2010	13.359
2011	13.558
2012	13.759
2013	13.806
2014	13.844
2015	13.91
2016	13.689
2017	13.336
2018	13.036
2019	12.737
2020	11.409
2021	11.729
2022	12.616
2023	12.978