Year	% (modeled ILO estimate)
1991	72.665
1992	71.552
1993	71.158
1994	70.676
1995	70.383
1996	70.58
1997	70.759
1998	70.271
1999	69.625
2000	68.747
2001	68.125
2002	67.4
2003	66.848
2004	66.077
2005	65.331
2006	64.698
2007	63.994
2008	63.297
2009	62.503
2010	61.747
2011	61.014
2012	60.294
2013	59.556
2014	58.801
2015	58.029
2016	57.708
2017	57.313
2018	56.882
2019	56.47
2020	55.397
2021	55.292
2022	55.52
2023	55.712