Year	% (modeled ILO estimate)
1991	64.378
1992	64.435
1993	64.608
1994	60.102
1995	57.698
1996	56.137
1997	56.013
1998	55.94
1999	55.597
2000	55.885
2001	57.339
2002	57.707
2003	58.318
2004	58.458
2005	58.458
2006	59.046
2007	60.191
2008	61.444
2009	61.519
2010	61.952
2011	62.069
2012	61.714
2013	61.945
2014	61.88
2015	61.786
2016	61.574
2017	61.448
2018	61.292
2019	61.183
2020	60.275
2021	60.418
2022	59.93
2023	59.818