Year	% (modeled ILO estimate)
1991	31.245
1992	30.626
1993	31.538
1994	31.357
1995	30.794
1996	26.305
1997	28.548
1998	31.766
1999	31.049
2000	30.391
2001	31.254
2002	29.536
2003	29.367
2004	26.795
2005	28.59
2006	29.953
2007	33.05
2008	33.065
2009	28.509
2010	26.863
2011	24.143
2012	28.153
2013	30.03
2014	27.234
2015	27.627
2016	23.808
2017	24.447
2018	24.432
2019	24.756
2020	18.985
2021	21.846
2022	23.584
2023	24.368