Year	% (modeled ILO estimate)
1991	46.082
1992	46.919
1993	47.652
1994	48.208
1995	48.038
1996	46.375
1997	42.167
1998	41.599
1999	38.831
2000	36.868
2001	35.399
2002	32.39
2003	31.38
2004	30.267
2005	28.137
2006	27.219
2007	28.245
2008	29.034
2009	28.13
2010	28.623
2011	26.901
2012	27.533
2013	27.066
2014	26.718
2015	29.516
2016	27.268
2017	28.408
2018	29.004
2019	29.891
2020	29.256
2021	26.063
2022	24.913
2023	23.859