Year	% (modeled ILO estimate)
1991	65.575
1992	64.895
1993	65.535
1994	67.2
1995	69.38
1996	69.775
1997	69.214
1998	67.843
1999	68.075
2000	68.981
2001	69.768
2002	70.715
2003	70.487
2004	71.84
2005	72.392
2006	72.866
2007	73.003
2008	72.122
2009	70.095
2010	69.74
2011	69.937
2012	69.046
2013	69.548
2014	70.763
2015	70.747
2016	71.93
2017	73.27
2018	73.066
2019	72.555
2020	72.242
2021	72.827
2022	73.534
2023	74.037