Year	% (modeled ILO estimate)
1991	58.155
1992	57.93
1993	57.647
1994	57.422
1995	55.083
1996	53.686
1997	52.731
1998	51.142
1999	50.627
2000	50.508
2001	50.674
2002	50.989
2003	51.39
2004	51.443
2005	52.02
2006	52.009
2007	52.669
2008	52.669
2009	51.281
2010	51.703
2011	51.85
2012	52.036
2013	52.245
2014	51.069
2015	51.148
2016	51.036
2017	50.958
2018	51.358
2019	51.707
2020	49.867
2021	49.269