Year	% (modeled ILO estimate)
1991	59.709
1992	58.342
1993	57.904
1994	58.383
1995	58.669
1996	58.449
1997	58.967
1998	59.737
1999	60.563
2000	61.269
2001	61.151
2002	61.739
2003	62.446
2004	62.637
2005	62.601
2006	62.677
2007	63.286
2008	63.317
2009	61.414
2010	61.437
2011	61.613
2012	61.586
2013	61.715
2014	61.358
2015	61.264
2016	61.084
2017	61.532
2018	61.59
2019	61.971
2020	57.836
2021	60.17
2022	61.568
2023	61.651