Year	% (modeled ILO estimate)
1991	77.193
1992	75.966
1993	74.64
1994	73.355
1995	71.977
1996	70.555
1997	69.131
1998	67.656
1999	66.963
2000	66.301
2001	65.651
2002	64.987
2003	64.256
2004	63.598
2005	62.862
2006	62.174
2007	61.282
2008	60.39
2009	58.852
2010	57.294
2011	55.703
2012	54.093
2013	52.459
2014	50.793
2015	51.693
2016	52.603
2017	53.454
2018	54.248
2019	54.979
2020	55.204
2021	54.965
2022	55.103
2023	55.327