Year	% (modeled ILO estimate)
1991	34.225
1992	33.71
1993	33.365
1994	32.828
1995	32.214
1996	31.737
1997	31.089
1998	30.469
1999	29.93
2000	29.45
2001	28.708
2002	27.376
2003	27.942
2004	28.002
2005	27.921
2006	27.577
2007	27.679
2008	27.799
2009	27.745
2010	28.064
2011	28.299
2012	28.664
2013	28.614
2014	28.63
2015	28.477
2016	28.167
2017	27.734
2018	27.286
2019	26.765
2020	25.436
2021	25.593
2022	26.664
2023	26.918