Year	% (modeled ILO estimate)
1991	60.045
1992	59.89
1993	59.985
1994	60.028
1995	60.215
1996	60.444
1997	60.736
1998	60.911
1999	61.204
2000	61.388
2001	61.648
2002	61.71
2003	61.613
2004	61.52
2005	61.625
2006	61.643
2007	61.576
2008	61.626
2009	61.627
2010	61.114
2011	60.734
2012	60.395
2013	59.942
2014	59.492
2015	59.179
2016	58.793
2017	58.417
2018	56.214
2019	55.726
2020	53.234
2021	53.29
2022	54.99
2023	55.175