Year	% (modeled ILO estimate)
1991	41.43784456676513
1992	41.6160203752912
1993	39.802571565642864
1994	38.98276035022264
1995	37.6121491292159
1996	36.0739580271173
1997	33.998264741788695
1998	32.291082725953075
1999	33.24869415165945
2000	32.823854039611376
2001	32.1842035224256
2002	31.760133891277487
2003	30.74398344326307
2004	30.736982641524886
2005	31.073459602947132
2006	31.093916234645913
2007	31.706093524816822
2008	32.59303807417972
2009	31.54454116982673
2010	31.544047353460467
2011	31.98633473697899
2012	31.280893917655288
2013	31.430217484863142
2014	31.328927604060492
2015	31.223575186441376
2016	31.339744817713655
2017	31.27247683153201
2018	31.232841696322968
2019	30.94356856803173
2020	28.679569635206665
2021	29.084349017896308
2022	29.859384183267885
2023	29.939246633615774