Year	% (modeled ILO estimate)
1991	25.5
1992	25.539
1993	25.837
1994	25.915
1995	26.098
1996	26.307
1997	26.339
1998	26.043
1999	25.725
2000	25.253
2001	25.002
2002	24.748
2003	24.43
2004	24.078
2005	23.728
2006	23.381
2007	23.035
2008	22.653
2009	23.576
2010	22.049
2011	20.45
2012	19.867
2013	19.481
2014	19.248
2015	19.18
2016	18.859
2017	18.44
2018	18.001
2019	17.542
2020	16.377
2021	16.593
2022	17.693
2023	16.085