Year	% (modeled ILO estimate)
1991	53.334
1992	53.232
1993	53.135
1994	53.038
1995	52.934
1996	52.829
1997	52.722
1998	52.612
1999	52.5
2000	52.385
2001	52.268
2002	52.151
2003	52.036
2004	51.923
2005	51.812
2006	51.702
2007	51.593
2008	51.486
2009	51.38
2010	51.277
2011	51.178
2012	51.08
2013	51.641
2014	52.199
2015	52.756
2016	53.311
2017	53.862
2018	53.404
2019	52.893
2020	52.401
2021	52.173
2022	51.88
2023	51.764