Year	% (modeled ILO estimate)
1991	70.815
1992	70.036
1993	69.067
1994	68.819
1995	69.149
1996	68.755
1997	69.161
1998	69.623
1999	69.637
2000	70.014
2001	68.005
2002	65.884
2003	63.715
2004	61.468
2005	59.173
2006	56.812
2007	54.417
2008	51.96
2009	49.511
2010	47.06
2011	47.032
2012	46.913
2013	46.819
2014	46.386
2015	46.214
2016	46.087
2017	46.006
2018	46.076
2019	45.931
2020	45.435
2021	45.341
2022	45.925
2023	45.731