Year	% (modeled ILO estimate)
1991	22.348
1992	24.014
1993	22.685
1994	23.061
1995	23.267
1996	24.271
1997	23.974
1998	23.406
1999	27.243
2000	23.484
2001	20.615
2002	22.28
2003	22.029
2004	23.024
2005	22.75
2006	23.642
2007	25.304
2008	26.519
2009	26.527
2010	26.25
2011	23.676
2012	22.05
2013	22.746
2014	22.951
2015	21.176
2016	20.876
2017	19.592
2018	18.048
2019	18.085
2020	18.547
2021	19.693
2022	20.115
2023	20.27