Year	% (modeled ILO estimate)
1991	20.372
1992	20.484
1993	20.59
1994	20.724
1995	20.906
1996	21.107
1997	21.232
1998	21.517
1999	21.652
2000	21.91
2001	22.218
2002	21.7
2003	21.805
2004	22.438
2005	22.61
2006	23.315
2007	23.602
2008	23.734
2009	23.532
2010	23.151
2011	22.574
2012	21.964
2013	22.383
2014	22.262
2015	21.858
2016	20.819
2017	19.949
2018	19.726
2019	19.516
2020	18.149
2021	18.14
2022	17.361
2023	17.587