Year	% (modeled ILO estimate)
1991	56.131
1992	56.009
1993	55.934
1994	55.849
1995	55.711
1996	55.682
1997	55.571
1998	55.426
1999	55.344
2000	55.279
2001	55.282
2002	55.194
2003	55.169
2004	55.107
2005	54.429
2006	53.75
2007	53.069
2008	52.387
2009	51.704
2010	51.02
2011	53.259
2012	57.925
2013	49.839
2014	51.602
2015	52.23
2016	52.517
2017	52.473
2018	52.41
2019	51.409
2020	49.274
2021	50.907
2022	51.602
2023	51.876