Year	% (modeled ILO estimate)
1991	36.122
1992	36.399
1993	36.453
1994	36.105
1995	35.637
1996	34.967
1997	34.196
1998	33.803
1999	34.821
2000	34.153
2001	33.421
2002	32.743
2003	32.255
2004	31.289
2005	30.668
2006	30.08
2007	27.93
2008	27.18
2009	24.46
2010	21.95
2011	20.71
2012	21.85
2013	22.74
2014	21.28
2015	22.63
2016	23.45
2017	24.07
2018	23.31
2019	22.68
2020	21.1
2021	25.68
2022	25.832
2023	24.774