Year	% (modeled ILO estimate)
1991	43.38
1992	43
1993	42.38
1994	41.76
1995	41.32
1996	40.08
1997	38.71
1998	43.99
1999	42.03
2000	41.47
2001	38.72
2002	38.66
2003	37.2
2004	39.18
2005	36.53
2006	35.36
2007	34.24
2008	33.83
2009	33.76
2010	32.93
2011	31.72
2012	31.47
2013	31.64
2014	29.91
2015	27.56
2016	26.32
2017	25.94
2018	25.08
2019	23.5
2020	22.77
2021	22.65
2022	25.4
2023	26.62