Year	% (modeled ILO estimate)
1991	59.538
1992	59.087
1993	58.691
1994	58.026
1995	57.477
1996	56.879
1997	56.362
1998	55.82
1999	55.261
2000	54.706
2001	54.109
2002	53.81
2003	53.543
2004	53.336
2005	53.126
2006	52.852
2007	52.561
2008	52.225
2009	51.841
2010	51.497
2011	49.871
2012	50.731
2013	51.629
2014	52.564
2015	53.477
2016	53.486
2017	53.501
2018	53.826
2019	54.087
2020	53.028
2021	52.358
2022	52.347
2023	52.716