Year	% (modeled ILO estimate)
1991	78.931
1992	78.476
1993	78.167
1994	77.573
1995	77.19
1996	76.857
1997	76.448
1998	75.95
1999	75.414
2000	74.83
2001	74.32
2002	73.728
2003	73.339
2004	72.084
2005	71.028
2006	70.834
2007	69.474
2008	67.367
2009	65.19
2010	63.184
2011	61.038
2012	58.934
2013	56.631
2014	54.319
2015	53.816
2016	53.416
2017	53.049
2018	52.682
2019	52.324
2020	51.373
2021	51.512
2022	51.641
2023	51.594