Year	% (modeled ILO estimate)
1991	42.383
1992	41.734
1993	41.099
1994	40.66
1995	40.206
1996	39.58
1997	39.484
1998	39.939
1999	44.213
2000	43.217
2001	42.058
2002	43.042
2003	43.466
2004	43.64
2005	43.628
2006	44.21
2007	43.515
2008	42.704
2009	42.011
2010	41.315
2011	40.667
2012	39.995
2013	39.657
2014	39.126
2015	38.727
2016	38.296
2017	39.544
2018	40.527
2019	39.859
2020	39.985
2021	40.043
2022	40.769
2023	40.938