Year	% (modeled ILO estimate)
1991	56.874
1992	56.931
1993	56.783
1994	56.687
1995	56.557
1996	56.656
1997	56.6
1998	56.425
1999	56.154
2000	55.831
2001	55.805
2002	55.732
2003	55.552
2004	55.398
2005	55.286
2006	55.459
2007	55.6
2008	55.7
2009	55.717
2010	55.712
2011	57.96
2012	57.546
2013	57.135
2014	56.727
2015	56.321
2016	55.916
2017	55.513
2018	55.113
2019	54.716
2020	54.839
2021	55.552
2022	53.612
2023	53.634