Year	% (modeled ILO estimate)
1991	19.087
1992	19.684
1993	24.06
1994	24.061
1995	24.064
1996	23.815
1997	25.929
1998	25.437
1999	27.13
2000	25.795
2001	26.163
2002	26.568
2003	28.288
2004	27.026
2005	28.543
2006	25.16
2007	21.185
2008	22.447
2009	20.842
2010	19.327
2011	19.467
2012	19.18
2013	18.894
2014	18.611
2015	18.329
2016	17.222
2017	16.017
2018	14.816
2019	13.73
2020	12.972
2021	13.33
2022	13.387
2023	13.309