Year	% (modeled ILO estimate)
1991	47.077
1992	47.52
1993	44.75
1994	42.68
1995	44.57
1996	38.99
1997	39.93
1998	44.98
1999	44.59
2000	42.84
2001	38.9
2002	36.1
2003	34.5
2004	30.82
2005	30.32
2006	30.21
2007	29.55
2008	28.71
2009	27.75
2010	27.53
2011	27
2012	27.9
2013	30.98
2014	33.01
2015	34.39
2016	36.14
2017	36.48
2018	37.07
2019	37.25
2020	35.29
2021	35.07
2022	34
2023	35.39