Year	% (modeled ILO estimate)
1991	68.836
1992	68.606
1993	68.771
1994	75.154
1995	74.415
1996	74.088
1997	73.829
1998	72.982
1999	72.079
2000	71.174
2001	70.253
2002	69.315
2003	68.375
2004	67.463
2005	66.592
2006	65.735
2007	64.873
2008	64.461
2009	63.869
2010	63.004
2011	62.515
2012	61.611
2013	61.004
2014	60.246
2015	59.662
2016	58.918
2017	58.755
2018	58.112
2019	57.465
2020	56.894
2021	55.801
2022	55.318
2023	55.236