Year	% (modeled ILO estimate)
1991	42.624
1992	41.248
1993	40.02
1994	44.442
1995	44.534
1996	51.71
1997	48.153
1998	51.79
1999	52.71
2000	51.8
2001	49.311
2002	48.627
2003	45.64
2004	49.582
2005	50.918
2006	50.116
2007	51.935
2008	50.135
2009	44.891
2010	42.969
2011	43.814
2012	38.946
2013	38.91
2014	33.714
2015	33.232
2016	33.603
2017	31.852
2018	36.424
2019	32.968
2020	29.535
2021	30.897
2022	31.053
2023	31.769