Year	% (modeled ILO estimate)
1991	50.399
1992	48.569
1993	48.881
1994	49.608
1995	48.146
1996	49.112
1997	49.385
1998	53.426
1999	52.221
2000	51.269
2001	50.971
2002	50.287
2003	50.376
2004	50.08
2005	50.257
2006	50.681
2007	50.754
2008	50.942
2009	50.388
2010	50.743
2011	50.692
2012	50.53
2013	49.869
2014	49.453
2015	51.244
2016	51.452
2017	51.803
2018	49.486
2019	49.81
2020	47.784
2021	48.396
2022	48.09
2023	47.545