Year	% (modeled ILO estimate)
1991	70.573
1992	68.241
1993	66.094
1994	64.371
1995	63.39
1996	62.777
1997	63.114
1998	67.542
1999	66.957
2000	67.59
2001	68.18
2002	68.055
2003	66.341
2004	65.627
2005	64.529
2006	64.758
2007	64.579
2008	64.469
2009	61.74
2010	60.656
2011	58.794
2012	55.968
2013	54.66
2014	55.779
2015	56.287
2016	57.053
2017	59.083
2018	60.177
2019	60.642
2020	58.921
2021	58.472
2022	59.59
2023	59.796