Year	% (modeled ILO estimate)
1991	14.303
1992	14.166
1993	14.13
1994	14.045
1995	14.649
1996	15.283
1997	15.935
1998	16.612
1999	17.307
2000	16.111
2001	14.974
2002	13.908
2003	12.897
2004	11.951
2005	11.066
2006	10.228
2007	9.442
2008	8.702
2009	8.015
2010	7.383
2011	6.015
2012	4.902
2013	3.976
2014	3.235
2015	2.603
2016	2.587
2017	2.578
2018	2.61
2019	2.616
2020	2.472
2021	2.547
2022	2.627
2023	2.603