Year	% (modeled ILO estimate)
1991	54.047
1992	55.668
1993	53.97
1994	52.875
1995	54.688
1996	54.049
1997	58.04
1998	61.33
1999	62.536
2000	69.563
2001	71.139
2002	71.395
2003	68.763
2004	66.185
2005	59.215
2006	60.988
2007	63.639
2008	64.5
2009	62.188
2010	59.511
2011	59.707
2012	59.503
2013	58.952
2014	58.496
2015	59.69
2016	59.359
2017	60.834
2018	62.558
2019	64.436
2020	61.219
2021	61.77
2022	62.835
2023	64.462