Year	% (modeled ILO estimate)
1991	57.085
1992	56.929
1993	56.878
1994	56.826
1995	56.763
1996	56.677
1997	56.476
1998	56.319
1999	56.2
2000	56.055
2001	55.911
2002	55.721
2003	55.591
2004	55.465
2005	54.523
2006	55.517
2007	56.458
2008	57.428
2009	58.362
2010	59.334
2011	60.279
2012	58.987
2013	57.669
2014	56.342
2015	55.736
2016	55.093
2017	54.986
2018	54.914
2019	54.917
2020	52.917
2021	52.709
2022	54.99
2023	55.69