Year	% (modeled ILO estimate)
1991	64.483
1992	62.833
1993	62.349
1994	61.668
1995	61.239
1996	61.509
1997	61.773
1998	61.691
1999	61.397
2000	60.793
2001	60.598
2002	60.282
2003	60.232
2004	59.894
2005	59.606
2006	59.481
2007	59.271
2008	59.081
2009	58.777
2010	58.532
2011	58.322
2012	58.133
2013	57.928
2014	57.707
2015	57.471
2016	57.026
2017	56.478
2018	55.871
2019	55.274
2020	54.202
2021	54.094
2022	54.32
2023	54.659