Year	% (modeled ILO estimate)
1991	42.679
1992	42.94
1993	42.978
1994	42.97
1995	43.124
1996	43.187
1997	43.184
1998	43.124
1999	43.031
2000	43.069
2001	43.116
2002	43.033
2003	42.921
2004	47.362
2005	45.668
2006	44.048
2007	42.472
2008	40.914
2009	39.373
2010	37.85
2011	36.368
2012	34.958
2013	33.587
2014	32.178
2015	32.274
2016	32.437
2017	32.619
2018	32.812
2019	32.503
2020	32.066
2021	32.019
2022	32.132
2023	32.023