Year	% (modeled ILO estimate)
1991	30.365
1992	32.264
1993	32.668
1994	29.471
1995	27.487
1996	26.249
1997	26.67
1998	26.809
1999	23.855
2000	24.755
2001	25.244
2002	21.335
2003	19.356
2004	21.524
2005	26.417
2006	26.361
2007	26.285
2008	26.402
2009	25.88
2010	23.883
2011	23.183
2012	22.287
2013	20.308
2014	20.098
2015	19.872
2016	19.668
2017	17.927
2018	16.41
2019	13.826
2020	11.957
2021	12.665
2022	13.376
2023	13.579