Year	% (modeled ILO estimate)
1991	42.516
1992	42
1993	41.397
1994	40.687
1995	39.895
1996	39.154
1997	38.397
1998	37.626
1999	36.809
2000	35.958
2001	35.311
2002	34.62
2003	33.943
2004	33.316
2005	32.784
2006	32.399
2007	32.105
2008	31.91
2009	29.683
2010	25.522
2011	27.532
2012	26.606
2013	27.145
2014	25.617
2015	27.137
2016	27.375
2017	28.22
2018	26.234
2019	27.015
2020	23.613
2021	24.606
2022	26.664
2023	28.569