Year	% (modeled ILO estimate)
1991	47.31843319748017
1992	46.4264057907125
1993	45.24804350118356
1994	44.96653999693503
1995	43.18152642040741
1996	42.40082190935528
1997	42.104459783679395
1998	40.79208216898564
1999	40.37857265698548
2000	40.10020806733014
2001	39.17185721103872
2002	37.84065427294657
2003	37.26170596880376
2004	37.41087869713786
2005	37.82081566962566
2006	38.027473804778154
2007	38.117996964599925
2008	38.20979716326385
2009	36.91557269709771
2010	37.108135092703044
2011	38.54640503957408
2012	38.141384264514954
2013	38.36327203977776
2014	38.67957306732628
2015	39.07733477129215
2016	39.16332163501304
2017	39.715342577179655
2018	40.443513070190455
2019	39.475006791570536
2020	36.735982700049874
2021	38.09272760410469
2022	41.50729218878911
2023	41.907447367955044