Year	% (modeled ILO estimate)
1991	54.933
1992	54.74
1993	54.579
1994	54.459
1995	54.383
1996	54.366
1997	54.369
1998	54.387
1999	54.394
2000	54.379
2001	54.369
2002	54.336
2003	54.275
2004	54.164
2005	53.986
2006	53.722
2007	53.454
2008	53.173
2009	52.859
2010	52.485
2011	52.078
2012	51.615
2013	51.08
2014	50.49
2015	49.855
2016	49.387
2017	49.021
2018	48.796
2019	48.731
2020	46.852
2021	47.004
2022	48.403
2023	48.525