Year	% (modeled ILO estimate)
1991	64.449
1992	63.155
1993	63.709
1994	62.294
1995	62.427
1996	58.936
1997	58.182
1998	55.897
1999	56.892
2000	57.164
2001	58.821
2002	56.773
2003	58.421
2004	56.596
2005	55.205
2006	53.759
2007	54.894
2008	52.144
2009	51.213
2010	52.261
2011	53.221
2012	54.276
2013	54.109
2014	55.893
2015	57.424
2016	57.062
2017	56.982
2018	55.83
2019	55.649
2020	55.963
2021	56.527
2022	55.586
2023	55.279