Year	% (modeled ILO estimate)
1991	71.12
1992	70.86
1993	70.46
1994	70.284
1995	70.372
1996	70.052
1997	70.225
1998	70.489
1999	70.448
2000	70.666
2001	68.74
2002	66.65
2003	64.535
2004	62.311
2005	60.036
2006	57.662
2007	55.242
2008	52.703
2009	50.188
2010	47.663
2011	47.19
2012	47.106
2013	47.012
2014	46.787
2015	46.67
2016	46.58
2017	46.466
2018	46.487
2019	46.366
2020	45.653
2021	45.135
2022	46.408
2023	46.237