Year	% (modeled ILO estimate)
1991	50.198
1992	50.513
1993	50.59
1994	53.475
1995	52.736
1996	50.444
1997	51.618
1998	54.874
1999	52.462
2000	49.018
2001	47.468
2002	42.675
2003	39.46
2004	43.386
2005	44.749
2006	46.784
2007	50.368
2008	50.082
2009	50.819
2010	50.801
2011	52.309
2012	51.096
2013	51.099
2014	50.052
2015	45.15
2016	43.81
2017	42.374
2018	40.085
2019	39.137
2020	32.392
2021	35.341
2022	37.42
2023	38.02