Year	% (modeled ILO estimate)
1991	32.678
1992	32.529
1993	30.074
1994	28.649
1995	27.908
1996	28.405
1997	28.042
1998	28.001
1999	24.636
2000	24.438
2001	24.401
2002	22.22
2003	21.281
2004	21.131
2005	22.577
2006	24.022
2007	25.879
2008	27.403
2009	26.858
2010	26.369
2011	24.876
2012	24.664
2013	24.185
2014	25.754
2015	25.978
2016	28.397
2017	29.634
2018	30.946
2019	31.708
2020	28.385
2021	27.321
2022	27.768
2023	28.421