Year	% (modeled ILO estimate)
1991	68.252
1992	68.192
1993	68.03
1994	67.807
1995	67.545
1996	67.685
1997	67.755
1998	67.81
1999	67.876
2000	67.956
2001	68.39
2002	68.714
2003	68.976
2004	69.21
2005	69.423
2006	69.896
2007	70.239
2008	70.486
2009	70.651
2010	70.748
2011	70.966
2012	68.144
2013	65.185
2014	62.108
2015	62.014
2016	62.004
2017	61.917
2018	61.77
2019	61.576
2020	60.991
2021	60.976
2022	59.982
2023	60.159