Year	% (modeled ILO estimate)
1991	56.86
1992	54.19
1993	53.201
1994	53.845
1995	54.048
1996	52.989
1997	52.502
1998	52.698
1999	55.047
2000	56.462
2001	56.178
2002	57.054
2003	57.436
2004	57.208
2005	56.466
2006	57.49
2007	59.008
2008	58.912
2009	53.463
2010	53.093
2011	54.241
2012	53.177
2013	54.202
2014	54.14
2015	54.528
2016	54.157
2017	55.504
2018	55.595
2019	56.177
2020	48.861
2021	54.363
2022	56.474
2023	56.682