Year	% (modeled ILO estimate)
1991	15.684
1992	15.539
1993	15.516
1994	15.43
1995	16.26
1996	17.125
1997	18.027
1998	18.965
1999	19.94
2000	18.797
2001	17.706
2002	16.665
2003	15.673
2004	14.73
2005	13.834
2006	12.985
2007	12.18
2008	11.419
2009	10.699
2010	10.02
2011	8.42
2012	7.055
2013	5.898
2014	4.92
2015	4.248
2016	4.26
2017	4.263
2018	4.257
2019	4.251
2020	4.211
2021	4.278
2022	4.294
2023	4.26