Year	% (modeled ILO estimate)
1991	43.263
1992	43.698
1993	40.972
1994	39.068
1995	38.408
1996	34.087
1997	34.471
1998	39.702
1999	39.838
2000	37.808
2001	34.133
2002	32.367
2003	30.64
2004	27.3
2005	27.111
2006	26.758
2007	25.76
2008	25.147
2009	24.676
2010	24.812
2011	24.298
2012	25.701
2013	27.399
2014	29.536
2015	31.035
2016	32.306
2017	32.458
2018	32.284
2019	32.212
2020	31.213
2021	31.786
2022	30.824
2023	31.164