Year	% (modeled ILO estimate)
1991	62.576
1992	62.412
1993	62.377
1994	62.344
1995	62.417
1996	62.396
1997	62.381
1998	62.472
1999	62.471
2000	62.544
2001	62.496
2002	62.678
2003	62.713
2004	64.404
2005	63.307
2006	62.271
2007	61.261
2008	60.242
2009	59.205
2010	58.153
2011	57.118
2012	56.149
2013	55.197
2014	54.14
2015	53.024
2016	52.048
2017	51.143
2018	50.303
2019	50.408
2020	49.841
2021	49.804
2022	50.335
2023	50.412