Year	% (modeled ILO estimate)
1991	70.976
1992	70.471
1993	69.801
1994	69.59
1995	69.791
1996	69.435
1997	69.718
1998	70.075
1999	70.06
2000	70.354
2001	68.387
2002	66.282
2003	64.141
2004	61.906
2005	59.621
2006	57.254
2007	54.845
2008	52.346
2009	49.862
2010	47.373
2011	47.114
2012	47.013
2013	46.919
2014	46.594
2015	46.45
2016	46.342
2017	46.244
2018	46.288
2019	46.155
2020	45.548
2021	45.235
2022	46.173
2023	45.991