Year	% (modeled ILO estimate)
1991	72.085
1992	72.478
1993	71.678
1994	70.431
1995	69.487
1996	68.893
1997	68.452
1998	68.26
1999	68.392
2000	70.91
2001	71.351
2002	71.812
2003	72.455
2004	72.829
2005	72.45
2006	71.631
2007	72.02
2008	72.47
2009	72.381
2010	73.338
2011	74.446
2012	76.285
2013	77.538
2014	77.559
2015	77.95
2016	77.936
2017	76.197
2018	76.059
2019	78.382
2020	76.745
2021	76.714
2022	77.772
2023	78.24