Year	% (modeled ILO estimate)
1991	19.66
1992	19.366
1993	19.192
1994	18.891
1995	18.538
1996	18.252
1997	17.868
1998	17.512
1999	17.21
2000	16.944
2001	14.042
2002	13.766
2003	13.642
2004	14.24
2005	13.752
2006	13.621
2007	13.82
2008	13.997
2009	14.019
2010	14.358
2011	14.576
2012	14.903
2013	14.84
2014	14.916
2015	14.858
2016	14.706
2017	14.547
2018	14.41
2019	14.203
2020	12.992
2021	13.338
2022	14.046
2023	14.119