Year	% (modeled ILO estimate)
1991	32.199
1992	32.281
1993	32.319
1994	32.369
1995	32.488
1996	32.379
1997	32.415
1998	32.508
1999	32.542
2000	32.529
2001	32.373
2002	32.372
2003	32.284
2004	31.626
2005	31.485
2006	31.446
2007	31.422
2008	31.335
2009	31.158
2010	31.034
2011	33.164
2012	36.648
2013	30.141
2014	29.956
2015	28.52
2016	30.825
2017	28.455
2018	30.49
2019	30.082
2020	28.837
2021	30.696
2022	30.184
2023	30.313