Year	% (modeled ILO estimate)
1991	66.213
1992	66.279
1993	66.166
1994	66.095
1995	66.223
1996	66.648
1997	67.115
1998	67.586
1999	67.94
2000	68.109
2001	68.463
2002	68.614
2003	68.626
2004	68.61
2005	68.63
2006	67.216
2007	65.771
2008	64.294
2009	62.789
2010	61.258
2011	59.706
2012	58.709
2013	57.704
2014	56.694
2015	55.677
2016	54.656
2017	53.63
2018	54.736
2019	55.742
2020	56.861
2021	56.883
2022	57.443
2023	57.492