Year	% (modeled ILO estimate)
1991	57.341
1992	57.289
1993	57.233
1994	57.177
1995	57.127
1996	57.079
1997	57.033
1998	56.99
1999	56.949
2000	56.91
2001	56.873
2002	56.836
2003	56.796
2004	56.753
2005	56.707
2006	56.661
2007	56.612
2008	56.562
2009	56.509
2010	56.454
2011	56.395
2012	56.334
2013	56.543
2014	56.755
2015	56.967
2016	57.182
2017	57.4
2018	56.492
2019	55.492
2020	54.953
2021	54.744
2022	54.363
2023	54.336