Year	% (modeled ILO estimate)
1991	25.658
1992	24.85
1993	24.394
1994	24.058
1995	23.759
1996	23.403
1997	22.856
1998	22.218
1999	21.618
2000	21.2
2001	20.952
2002	20.621
2003	20.161
2004	19.86
2005	19.584
2006	19.438
2007	19.259
2008	19.009
2009	17.416
2010	13.039
2011	15.621
2012	14.297
2013	14.542
2014	13.418
2015	14.434
2016	13.752
2017	14.751
2018	13.446
2019	13.045
2020	12.182
2021	11.102
2022	12.177
2023	12.79