Year	% (modeled ILO estimate)
1991	55.181
1992	56.182
1993	60.19
1994	61.841
1995	61.691
1996	60.261
1997	59.221
1998	57.22
1999	57.021
2000	58.342
2001	57.433
2002	53.432
2003	53.604
2004	54.454
2005	55.773
2006	56.223
2007	55.571
2008	53.971
2009	52.743
2010	52.682
2011	50.441
2012	52.461
2013	52.51
2014	52.53
2015	51.76
2016	51.291
2017	51.122
2018	49.882
2019	48.692
2020	44.932
2021	45.751
2022	47.373
2023	47.607