Year	% (modeled ILO estimate)
1991	66.686
1992	65.633
1993	67.322
1994	69.012
1995	67.299
1996	68.668
1997	65.262
1998	64.771
1999	64.442
2000	63.264
2001	62.091
2002	61.214
2003	59.956
2004	63.148
2005	62.227
2006	61.533
2007	61.398
2008	59.885
2009	58.869
2010	57.842
2011	56.805
2012	52.44
2013	53.326
2014	47.201
2015	46.138
2016	44.599
2017	43.376
2018	48.002
2019	46.84
2020	44.885
2021	45.586
2022	44.638
2023	44.437