Year	% (modeled ILO estimate)
1991	82.22
1992	81.706
1993	81.833
1994	81.777
1995	81.827
1996	81.676
1997	80.254
1998	79.806
1999	79.787
2000	79.583
2001	79.573
2002	79.37
2003	79.535
2004	79.003
2005	79.443
2006	78.931
2007	79.312
2008	81.046
2009	82.602
2010	82.123
2011	81.602
2012	81.291
2013	81.453
2014	80.853
2015	80.254
2016	79.724
2017	79.151
2018	78.689
2019	78.124
2020	76.731
2021	65.673
2022	69.439
2023	72.953