Year	% (modeled ILO estimate)
1991	30.532
1992	31.035
1993	31.13
1994	31.116
1995	31.465
1996	31.638
1997	32.564
1998	30.994
1999	29.982
2000	29.129
2001	27.316
2002	26.464
2003	27.559
2004	28.71
2005	29.42
2006	29.054
2007	29.843
2008	31.857
2009	31.857
2010	30.842
2011	32.38
2012	32.134
2013	31.409
2014	31.017
2015	30.441
2016	29.517
2017	29.941
2018	30.422
2019	29.262
2020	22.388
2021	22.925
2022	25.848
2023	26.101