Year	% (modeled ILO estimate)
1991	21.385
1992	20.835
1993	20.704
1994	20.862
1995	21.183
1996	19.372
1997	17.886
1998	16.296
1999	17.832
2000	19.449
2001	19.373
2002	19.295
2003	19.219
2004	17.045
2005	15.037
2006	13.207
2007	11.657
2008	10.446
2009	9.323
2010	8.796
2011	9.538
2012	9.083
2013	8.587
2014	8.437
2015	8.311
2016	8.234
2017	8.185
2018	8.151
2019	8.116
2020	7.506
2021	7.725
2022	7.76
2023	7.917