Year	% (modeled ILO estimate)
1991	77.346
1992	76.326
1993	75.387
1994	74.185
1995	73.135
1996	72.089
1997	70.959
1998	69.729
1999	68.377
2000	66.972
2001	65.604
2002	64.156
2003	62.861
2004	60.921
2005	59.129
2006	57.921
2007	57.746
2008	57.249
2009	56.759
2010	56.473
2011	56.121
2012	55.852
2013	55.463
2014	55.104
2015	55.015
2016	54.993
2017	55.019
2018	55.071
2019	55.087
2020	54.384
2021	54.795
2022	54.894
2023	54.757