Year	% (modeled ILO estimate)
1991	22.069
1992	22.1
1993	21.103
1994	21.674
1995	20.574
1996	19.719
1997	18.89
1998	18.086
1999	21.382
2000	19.672
2001	17.985
2002	21.113
2003	21.15
2004	21.164
2005	21.152
2006	21.108
2007	19.819
2008	19.851
2009	20.678
2010	19.229
2011	17.649
2012	17.523
2013	19.058
2014	19.47
2015	21.464
2016	21.053
2017	19.789
2018	12.061
2019	9.312
2020	7.606
2021	8.56
2022	8.394
2023	8.577