Year	% (modeled ILO estimate)
1991	57.194
1992	56.77
1993	53.465
1994	52.395
1995	51.194
1996	48.413
1997	46.983
1998	48.701
1999	47.661
2000	47.87
2001	48
2002	48.077
2003	48.135
2004	48.219
2005	48.354
2006	48.561
2007	48.905
2008	48.825
2009	49.36
2010	49.474
2011	49.495
2012	49.488
2013	49.504
2014	49.508
2015	49.508
2016	49.477
2017	49.445
2018	49.355
2019	51.614
2020	52.132
2021	53.91
2022	53.055
2023	52.584