Year	% (modeled ILO estimate)
1991	42.356
1992	42.427
1993	42.41
1994	43.744
1995	41.999
1996	40.724
1997	40.241
1998	42.067
1999	42.114
2000	40.643
2001	37.968
2002	35.224
2003	33.989
2004	31.516
2005	28.752
2006	29.154
2007	26.873
2008	26.139
2009	26.119
2010	25.279
2011	24.12
2012	25.906
2013	26.058
2014	26.059
2015	27.351
2016	26.207
2017	26.586
2018	26.25
2019	25.873
2020	21.432
2021	21.963
2022	23.288
2023	24.182