Year	% (modeled ILO estimate)
1991	26.388
1992	27.271
1993	27.554
1994	26.517
1995	27.717
1996	24.203
1997	24.959
1998	23.941
1999	20.567
2000	20.085
2001	19.256
2002	18.347
2003	18.858
2004	19.724
2005	20.496
2006	21.011
2007	21.834
2008	22.459
2009	21.909
2010	24.11
2011	25.531
2012	25.92
2013	25.294
2014	24.856
2015	24.818
2016	24.285
2017	24.417
2018	24.434
2019	23.405
2020	16.541
2021	17.748
2022	20.703
2023	19.863