Year	% (modeled ILO estimate)
1991	44.529
1992	41.995
1993	39.482
1994	34.434
1995	34.832
1996	36.815
1997	36.425
1998	34.017
1999	30.209
2000	28.352
2001	27.222
2002	26.771
2003	27.181
2004	26.286
2005	25.501
2006	25.765
2007	27.545
2008	26.216
2009	22.718
2010	20.503
2011	20.007
2012	20.083
2013	20.403
2014	23.191
2015	23.337
2016	25.199
2017	26.89
2018	27.457
2019	24.889
2020	22.665
2021	20.671
2022	21.348
2023	22.245