Year	% (modeled ILO estimate)
1991	48.777
1992	48.805
1993	48.731
1994	48.465
1995	47.993
1996	48.13
1997	47.938
1998	47.098
1999	46.635
2000	46.223
2001	45.708
2002	45.125
2003	44.524
2004	43.909
2005	43.293
2006	42.904
2007	42.488
2008	42.067
2009	41.673
2010	41.33
2011	41.246
2012	41.01
2013	40.802
2014	40.548
2015	40.319
2016	40.18
2017	39.97
2018	39.641
2019	39.269
2020	38.88
2021	38.792
2022	39.251
2023	39.363