Year	% (modeled ILO estimate)
1991	77.756
1992	77.765
1993	77.766
1994	77.768
1995	77.731
1996	77.752
1997	77.759
1998	77.886
1999	77.894
2000	77.866
2001	77.898
2002	77.702
2003	77.493
2004	77.016
2005	76.787
2006	77.341
2007	77.81
2008	78.195
2009	78.507
2010	78.918
2011	79.266
2012	75.961
2013	74.602
2014	73.187
2015	73.137
2016	73.138
2017	73.113
2018	73.101
2019	73.065
2020	72.292
2021	71.987
2022	72.923
2023	73.05