Year	% (modeled ILO estimate)
1991	60.454
1992	50.566
1993	41.012
1994	40.339
1995	42.602
1996	41.612
1997	41.312
1998	43.447
1999	43.827
2000	46.846
2001	45.562
2002	43.677
2003	42.732
2004	39.217
2005	38.218
2006	40.185
2007	42.075
2008	42.261
2009	37.666
2010	38.56
2011	40.805
2012	38.83
2013	40.575
2014	41.642
2015	42.458
2016	43.102
2017	43.908
2018	43.029
2019	42.839
2020	39.13
2021	39.826
2022	45.736
2023	45.659