Year	% (modeled ILO estimate)
1991	70.486
1992	70.846
1993	70.007
1994	66.458
1995	69.502
1996	71.522
1997	71.319
1998	71.912
1999	70.137
2000	69.082
2001	65.036
2002	67.284
2003	63.624
2004	63.793
2005	66.239
2006	69.314
2007	69.085
2008	68.157
2009	67.162
2010	63.9
2011	63.307
2012	60.914
2013	58.98
2014	58.786
2015	58.825
2016	61.164
2017	61.178
2018	60.79
2019	61.769
2020	60.358
2021	59.959
2022	62.888
2023	64.189