Year	% (modeled ILO estimate)
1991	27.715
1992	26.922
1993	26.511
1994	26.5
1995	26.31
1996	26.152
1997	25.905
1998	25.614
1999	25.569
2000	26.073
2001	25.836
2002	25.487
2003	24.744
2004	24.892
2005	24.811
2006	25.102
2007	25.049
2008	24.316
2009	21.454
2010	20.826
2011	18.495
2012	15.882
2013	14.172
2014	13.222
2015	12.987
2016	12.183
2017	11.944
2018	11.592
2019	11.176
2020	9.097
2021	9.948
2022	11.256
2023	11.357