Year	% (modeled ILO estimate)
1991	49.537
1992	49.459
1993	49.421
1994	49.415
1995	49.431
1996	49.174
1997	48.947
1998	48.736
1999	48.52
2000	48.288
2001	48.008
2002	47.756
2003	47.518
2004	47.277
2005	47.023
2006	46.616
2007	45.741
2008	44.868
2009	43.998
2010	43.132
2011	42.27
2012	41.413
2013	40.561
2014	39.714
2015	38.874
2016	38.041
2017	40.465
2018	40.588
2019	40.632
2020	40.048
2021	39.832
2022	39.035
2023	38.82