Year	% (modeled ILO estimate)
1991	51.762
1992	49.47
1993	45.755
1994	42.847
1995	38.235
1996	36.978
1997	34.738
1998	33.13
1999	31.727
2000	31.835
2001	32.286
2002	32.299
2003	27.054
2004	23.309
2005	24.898
2006	24.271
2007	24.651
2008	23.852
2009	26.734
2010	21.227
2011	20.704
2012	21.774
2013	21.884
2014	20.417
2015	29.082
2016	24.91
2017	25.758
2018	28.416
2019	28.733
2020	24.839
2021	29.375
2022	27.529
2023	29.15