Year	% (modeled ILO estimate)
1991	55.313
1992	54.947
1993	54.512
1994	54.306
1995	55.18
1996	54.895
1997	54.181
1998	53.922
1999	54.554
2000	54.731
2001	55.412
2002	56.964
2003	55.68
2004	54.401
2005	53.233
2006	52.272
2007	50.962
2008	49.654
2009	50.169
2010	49.122
2011	49.33
2012	49.011
2013	48.646
2014	46.159
2015	46.251
2016	46.34
2017	46.428
2018	45.897
2019	45.504
2020	38.104
2021	42.14
2022	43.822
2023	43.109