Year	% (modeled ILO estimate)
1991	39.192
1992	39.914
1993	40.5
1994	40.602
1995	40.702
1996	40.802
1997	40.901
1998	40.998
1999	41.094
2000	41.188
2001	41.281
2002	41.375
2003	41.465
2004	41.555
2005	41.646
2006	41.736
2007	41.825
2008	41.912
2009	41.999
2010	42.086
2011	42.174
2012	42.261
2013	42.112
2014	41.963
2015	41.814
2016	41.666
2017	41.518
2018	41.371
2019	41.138
2020	40.357
2021	40.38
2022	40.075
2023	40.246