Year	% (modeled ILO estimate)
1991	64.361
1992	63.432
1993	62.374
1994	61.332
1995	60.204
1996	59.584
1997	59.027
1998	58.519
1999	57.862
2000	57.024
2001	56.675
2002	56.152
2003	55.539
2004	55.222
2005	55.121
2006	54.816
2007	54.752
2008	54.711
2009	55.187
2010	55.878
2011	56.441
2012	57.117
2013	57.626
2014	58.053
2015	58.306
2016	58.517
2017	58.392
2018	57.975
2019	57.301
2020	55.713
2021	54.021
2022	53.911
2023	54.739