Year	% (modeled ILO estimate)
1991	64.125
1992	63.792
1993	63.519
1994	67.422
1995	67.57
1996	67.971
1997	67.91
1998	67.821
1999	66.081
2000	65.765
2001	66.807
2002	62.962
2003	59.714
2004	60.527
2005	59.857
2006	61.178
2007	63.523
2008	61.094
2009	61.286
2010	61.099
2011	61.681
2012	60.029
2013	60.806
2014	59.693
2015	56.642
2016	55.175
2017	53.784
2018	52.209
2019	51.836
2020	46.229
2021	49.77
2022	49.198
2023	50.254