Year	% (modeled ILO estimate)
1991	48.202
1992	48.085
1993	47.956
1994	47.66
1995	47.704
1996	47.798
1997	48.745
1998	49.411
1999	47.612
2000	47.803
2001	48.12
2002	47.68
2003	46.495
2004	48.89
2005	49.175
2006	49.425
2007	50.221
2008	50.992
2009	50.518
2010	49.533
2011	48.06
2012	47.337
2013	45.972
2014	46.715
2015	46.675
2016	47.524
2017	49.762
2018	50.659
2019	50.59
2020	50.186
2021	51.198
2022	51.854
2023	51.945