Year	% (modeled ILO estimate)
1991	75.875
1992	75.809
1993	75.636
1994	75.426
1995	75.119
1996	75.233
1997	75.274
1998	75.588
1999	75.617
2000	75.584
2001	76.007
2002	75.834
2003	75.564
2004	74.781
2005	74.477
2006	76.092
2007	77.439
2008	78.587
2009	79.503
2010	80.535
2011	81.488
2012	76.708
2013	74.101
2014	71.267
2015	71.143
2016	71.15
2017	71.057
2018	70.922
2019	70.718
2020	69.978
2021	69.984
2022	69.021
2023	69.291