Year	% (modeled ILO estimate)
1991	39.26
1992	39.69
1993	37.01
1994	35.28
1995	31.95
1996	28.95
1997	28.75
1998	34.17
1999	34.86
2000	32.54
2001	29.15
2002	28.47
2003	26.61
2004	23.63
2005	23.77
2006	23.17
2007	21.82
2008	21.44
2009	21.47
2010	21.97
2011	21.46
2012	23.38
2013	23.62
2014	25.87
2015	27.49
2016	28.25
2017	28.2
2018	27.21
2019	26.86
2020	26.88
2021	28.3
2022	27.5
2023	26.779