Year	% (modeled ILO estimate)
1991	41.77
1992	41.76
1993	40.31
1994	39.519
1995	39.066
1996	40.128
1997	41.196
1998	40.266
1999	40.398
2000	40.517
2001	41.965
2002	43.426
2003	43.506
2004	43.585
2005	42.971
2006	42.359
2007	41.279
2008	40.743
2009	41.096
2010	41.597
2011	40.265
2012	40.839
2013	41.415
2014	40.072
2015	40.314
2016	40.227
2017	40.139
2018	40.052
2019	39.988
2020	42.104
2021	43.765
2022	43.172
2023	43.162