Year	% (modeled ILO estimate)
1991	53.721
1992	52.756
1993	51.661
1994	50.553
1995	49.5
1996	48.692
1997	48.068
1998	47.535
1999	46.919
2000	46.894
2001	46.867
2002	46.842
2003	46.818
2004	46.793
2005	46.769
2006	46.745
2007	46.723
2008	46.705
2009	46.69
2010	46.672
2011	46.645
2012	46.62
2013	46.599
2014	46.581
2015	46.564
2016	46.555
2017	45.226
2018	43.871
2019	42.479
2020	42.088
2021	41.828
2022	41.234
2023	41.335