Year	% (modeled ILO estimate)
1991	59.968
1992	60.619
1993	62.046
1994	62.113
1995	62.11
1996	60.031
1997	59.96
1998	57.908
1999	53.954
2000	53.752
2001	57.467
2002	56.956
2003	58.524
2004	57.54
2005	58.113
2006	57.453
2007	56.734
2008	56.929
2009	58.869
2010	59.601
2011	60.563
2012	61.29
2013	61.048
2014	61.095
2015	61.276
2016	60.495
2017	60.01
2018	59.134
2019	57.708
2020	53.285
2021	55.388
2022	56.497
2023	57.334