Year	% (modeled ILO estimate)
1991	60.343
1992	60.119
1993	60.412
1994	61.22
1995	61.613
1996	61.899
1997	62.514
1998	62.777
1999	63.032
2000	63.297
2001	62.519
2002	61.548
2003	61.066
2004	61.164
2005	61.516
2006	61.921
2007	61.752
2008	61.005
2009	58.2
2010	57.369
2011	57.326
2012	57.752
2013	57.845
2014	58.351
2015	58.785
2016	59.181
2017	59.59
2018	59.94
2019	60.329
2020	56.38
2021	57.946
2022	59.266
2023	59.6