Year	% (modeled ILO estimate)
1991	43.584
1992	43.605
1993	43.547
1994	43.485
1995	43.474
1996	43.462
1997	43.269
1998	47.587
1999	47.117
2000	46.75
2001	47.668
2002	47.444
2003	47.013
2004	48.527
2005	48.356
2006	50.035
2007	47.337
2008	46.126
2009	42.962
2010	40.546
2011	38.033
2012	39.335
2013	37.677
2014	36.502
2015	38.988
2016	40.154
2017	41.39
2018	40.479
2019	40.104
2020	35.323
2021	41.729
2022	42.016
2023	42.162