Year	% (modeled ILO estimate)
1991	36.88806172102142
1992	36.800888946796476
1993	36.629150184395314
1994	36.339058449862456
1995	36.04300419274425
1996	35.3004253149881
1997	34.96109845075291
1998	34.53643948459777
1999	35.291971156404315
2000	34.36215717810123
2001	33.43782460594702
2002	33.61767344990918
2003	33.68469764734847
2004	33.61566394311688
2005	33.57368376812638
2006	33.00648569462075
2007	32.24957942279939
2008	31.805931119130005
2009	31.48754783473184
2010	31.063920005185928
2011	29.99845781642381
2012	29.98842529907979
2013	29.530464382301407
2014	29.028702174086014
2015	28.011369784612157
2016	27.88262606531943
2017	27.23207892201866
2018	25.796182930738475
2019	25.10614375956902
2020	23.59714784997084
2021	24.102317215288167
2022	24.083310918564134
2023	24.205348278216334