Year	% (modeled ILO estimate)
1991	28.896
1992	28.132
1993	27.19
1994	26.299
1995	25.63
1996	25.065
1997	25.051
1998	25.001
1999	24.887
2000	24.894
2001	24.824
2002	24.836
2003	26.023
2004	27.195
2005	26.514
2006	25.268
2007	24.409
2008	22.376
2009	22.251
2010	20.856
2011	19.903
2012	20.445
2013	19.693
2014	18.423
2015	18.497
2016	18.787
2017	19.892
2018	19.708
2019	19.367
2020	17.198
2021	16.833
2022	16.951
2023	17.36