Year	% (modeled ILO estimate)
1991	44.28
1992	44.487
1993	44.649
1994	44.712
1995	44.625
1996	44.855
1997	44.958
1998	44.946
1999	44.882
2000	44.827
2001	44.988
2002	45.097
2003	45.173
2004	45.221
2005	45.242
2006	43.87
2007	42.507
2008	41.156
2009	39.817
2010	38.493
2011	37.185
2012	35.896
2013	35.952
2014	35.949
2015	35.885
2016	35.889
2017	35.802
2018	35.639
2019	35.413
2020	35.077
2021	35.013
2022	34.534
2023	34.589