Year	% (modeled ILO estimate)
1991	55.845
1992	56.107
1993	55.765
1994	55.388
1995	55.301
1996	53.23
1997	56.161
1998	55.398
1999	55.434
2000	54.493
2001	53.677
2002	47.405
2003	45.965
2004	45.731
2005	43.888
2006	44.946
2007	44.929
2008	44.654
2009	43.939
2010	43.36
2011	43.134
2012	43.459
2013	43.125
2014	43.41
2015	42.646
2016	42.285
2017	44.092
2018	44.115
2019	44.099
2020	43.298
2021	39.04
2022	40.224
2023	40.193