Year	% (modeled ILO estimate)
1991	55.593
1992	55.636
1993	55.905
1994	55.16
1995	55.339
1996	55.314
1997	54.947
1998	55.018
1999	55.203
2000	54.736
2001	55.45
2002	56.421
2003	56.218
2004	56.051
2005	55.718
2006	55.004
2007	54.943
2008	54.556
2009	54.487
2010	54.651
2011	54.602
2012	54.825
2013	55.119
2014	55.083
2015	55.375
2016	55.129
2017	54.681
2018	54.634
2019	54.536
2020	54.018
2021	53.958
2022	55.116
2023	55.318