Year	% (modeled ILO estimate)
1991	72.763
1992	72.893
1993	72.956
1994	72.96
1995	73.199
1996	73.437
1997	73.674
1998	73.91
1999	74.145
2000	74.379
2001	74.612
2002	74.844
2003	75.074
2004	75.303
2005	75.53
2006	75.452
2007	75.374
2008	75.296
2009	75.217
2010	75.139
2011	75.06
2012	74.981
2013	74.903
2014	74.102
2015	73.294
2016	72.632
2017	71.938
2018	71.241
2019	70.567
2020	69.897
2021	69.748
2022	69.085
2023	69.149
