Year	% (modeled ILO estimate)
1991	49.996
1992	49.322
1993	48.646
1994	47.834
1995	47.033
1996	46.139
1997	45.124
1998	44.178
1999	43.253
2000	42.259
2001	41.07
2002	39.3
2003	40.317
2004	41.03
2005	51.372
2006	49.691
2007	42.309
2008	40.896
2009	39.403
2010	44.433
2011	45.959
2012	45.801
2013	45.726
2014	45.658
2015	45.755
2016	45.965
2017	46.086
2018	46.482
2019	46.455
2020	45.61
2021	45.874
2022	46.078
2023	45.772