Year	% (modeled ILO estimate)
1991	67.807
1992	67.407
1993	66.879
1994	66.345
1995	65.939
1996	65.985
1997	65.882
1998	66.179
1999	67.135
2000	67.078
2001	67.14
2002	65.827
2003	65.824
2004	63.833
2005	62.161
2006	60.129
2007	58.071
2008	57.407
2009	61.26
2010	60.476
2011	61.981
2012	62.705
2013	60.678
2014	60.155
2015	60.115
2016	57.797
2017	56.792
2018	56.034
2019	53.991
2020	54.594
2021	56.01
2022	51.465
2023	51.452