Year	% (modeled ILO estimate)
1991	14.341
1992	14.514
1993	14.642
1994	14.822
1995	15.091
1996	15.433
1997	15.785
1998	16.141
1999	16.456
2000	16.69
2001	17.023
2002	17.208
2003	17.288
2004	17.318
2005	17.326
2006	17.481
2007	17.624
2008	17.719
2009	17.715
2010	17.598
2011	17.559
2012	17.394
2013	17.15
2014	16.898
2015	16.669
2016	16.465
2017	16.296
2018	16.14
2019	15.968
2020	15.816
2021	15.791
2022	15.977
2023	16.002