Year	% (modeled ILO estimate)
1991	36.339
1992	33.183
1993	30.585
1994	32.035
1995	31.722
1996	28.938
1997	26.482
1998	25.995
1999	23.28
2000	20.477
2001	21.124
2002	20.508
2003	21.328
2004	22.281
2005	21.64
2006	23.231
2007	24.507
2008	26.265
2009	24.724
2010	24.316
2011	22.064
2012	21.863
2013	21.211
2014	20.727
2015	20.325
2016	19.764
2017	22.89
2018	20.677
2019	21.777
2020	18.776
2021	16.809
2022	19.807
2023	20.481