Year	% (modeled ILO estimate)
1991	42.929
1992	43.057
1993	43.326
1994	43.358
1995	43.512
1996	43.694
1997	43.71
1998	43.427
1999	43.145
2000	42.763
2001	42.613
2002	42.494
2003	42.354
2004	42.212
2005	42.114
2006	42.062
2007	42.04
2008	41.987
2009	42.847
2010	41.751
2011	40.54
2012	40.23
2013	40.131
2014	40.203
2015	40.464
2016	40.416
2017	40.269
2018	40.123
2019	39.974
2020	38.844
2021	39.115
2022	40.034
2023	37.725