Year	% (modeled ILO estimate)
1991	44.751
1992	44.577
1993	44.385
1994	44.165
1995	43.991
1996	44.043
1997	44.028
1998	43.964
1999	43.865
2000	43.829
2001	43.769
2002	43.787
2003	43.801
2004	43.867
2005	43.866
2006	44.119
2007	44.296
2008	44.484
2009	44.339
2010	44.123
2011	44.54
2012	44.858
2013	45.363
2014	45.484
2015	45.442
2016	45.158
2017	44.867
2018	44.68
2019	44.257
2020	43.098
2021	42.867
2022	43.992
2023	44.073
