Year	% (modeled ILO estimate)
1991	68.635
1992	68.565
1993	69.345
1994	65.109
1995	63.848
1996	66.431
1997	66.956
1998	67.221
1999	68.597
2000	68.278
2001	67.769
2002	69.257
2003	69.347
2004	67.057
2005	65.657
2006	68.618
2007	67.369
2008	67.128
2009	67.266
2010	68.108
2011	68.559
2012	67.579
2013	68.009
2014	67.899
2015	67.519
2016	68.349
2017	68.669
2018	67.989
2019	66.479
2020	65.019
2021	65.38
2022	65.02
2023	64.627