Year	% (modeled ILO estimate)
1991	70.407
1992	69.75
1993	69.183
1994	68.507
1995	67.674
1996	66.842
1997	62.253
1998	60.205
1999	57.335
2000	53.55
2001	57.416
2002	56.114
2003	54.314
2004	53.574
2005	53.265
2006	52.93
2007	52.574
2008	54.677
2009	56.816
2010	56.108
2011	54.493
2012	52.996
2013	54.849
2014	54.837
2015	55.165
2016	52.767
2017	52.508
2018	52.679
2019	54.189
2020	49.443
2021	42.575
2022	41.134
2023	43.544