Year	% (modeled ILO estimate)
1991	58.26
1992	58.341
1993	58.352
1994	58.28
1995	58.129
1996	58.154
1997	58.088
1998	57.946
1999	57.744
2000	57.5
2001	57.474
2002	57.38
2003	57.246
2004	57.104
2005	56.98
2006	57.082
2007	57.152
2008	57.204
2009	57.235
2010	57.236
2011	57.634
2012	57.232
2013	56.828
2014	56.424
2015	56.019
2016	55.613
2017	55.206
2018	54.798
2019	54.39
2020	54.085
2021	54.548
2022	53.144
2023	53.113