Year	% (modeled ILO estimate)
1991	68.985
1992	68.664
1993	68.225
1994	67.837
1995	67.57
1996	67.469
1997	67.023
1998	66.746
1999	66.289
2000	65.412
2001	66.342
2002	65.127
2003	64.909
2004	64.098
2005	63.273
2006	63.314
2007	63.028
2008	62.221
2009	61.313
2010	61.687
2011	62.432
2012	62.184
2013	62.877
2014	63.477
2015	64.166
2016	65.293
2017	66.316
2018	67.516
2019	68.287
2020	67.636
2021	68.962
2022	69.274
2023	70.942