Year	% (modeled ILO estimate)
1991	57.276
1992	55.282
1993	57.588
1994	56.521
1995	59.191
1996	57.507
1997	60.352
1998	60.795
1999	62.299
2000	63.294
2001	64.288
2002	62.604
2003	60.753
2004	61.037
2005	61.098
2006	63.31
2007	62.485
2008	61.898
2009	58.019
2010	57.466
2011	56.955
2012	58.036
2013	56.077
2014	57.094
2015	58.027
2016	57.018
2017	59.198
2018	60.247
2019	60.198
2020	54.482
2021	56.951
2022	58.541
2023	59.12