Year	% (modeled ILO estimate)
1991	60.208
1992	59.795
1993	59.409
1994	59.144
1995	58.878
1996	58.527
1997	58.478
1998	58.736
1999	61.621
2000	60.888
2001	60.097
2002	60.832
2003	61.118
2004	61.216
2005	61.208
2006	61.644
2007	61.123
2008	60.545
2009	60.093
2010	59.642
2011	59.187
2012	58.725
2013	58.474
2014	58.117
2015	57.839
2016	57.546
2017	58.294
2018	58.903
2019	58.577
2020	58.311
2021	58.632
2022	59.296
2023	59.679