Year	% (modeled ILO estimate)
1991	77.916
1992	79.073
1993	78.971
1994	79.203
1995	79.419
1996	78.632
1997	77.437
1998	76.031
1999	74.764
2000	73.271
2001	71.44
2002	69.317
2003	68.297
2004	66.593
2005	65.581
2006	64.301
2007	63.241
2008	61.898
2009	61.184
2010	59.41
2011	61.531
2012	61.491
2013	62.112
2014	62.871
2015	63.426
2016	64.681
2017	65.384
2018	65.802
2019	68.503
2020	66.272
2021	67.409
2022	69.587
2023	69.754