Year	% (modeled ILO estimate)
1991	72.75
1992	72.735
1993	72.451
1994	72.425
1995	72.628
1996	73.061
1997	73.337
1998	73.423
1999	73.505
2000	73.622
2001	73.854
2002	73.969
2003	74.09
2004	74.184
2005	74.216
2006	74.208
2007	73.846
2008	73.445
2009	73.115
2010	70.848
2011	68.617
2012	67.787
2013	66.974
2014	67.427
2015	66.305
2016	65.064
2017	63.843
2018	62.64
2019	61.454
2020	59.531
2021	59.406
2022	59.462
2023	59.798