Year	% (modeled ILO estimate)
1991	73.55
1992	73.502
1993	73.402
1994	73.268
1995	73.095
1996	73.091
1997	73.109
1998	73.135
1999	73.162
2000	73.181
2001	73.088
2002	72.991
2003	72.897
2004	72.819
2005	72.753
2006	72.767
2007	72.822
2008	72.849
2009	72.813
2010	72.705
2011	72.438
2012	72.134
2013	71.367
2014	70.572
2015	68.965
2016	67.356
2017	65.756
2018	64.045
2019	62.354
2020	59.715
2021	60.276
2022	60.914
2023	59.156