Year	% (modeled ILO estimate)
1991	59.219
1992	58.099
1993	56.97
1994	55.834
1995	54.692
1996	53.544
1997	52.393
1998	51.24
1999	49.8
2000	49.15
2001	48.5
2002	47.734
2003	46.97
2004	45.65
2005	45.226
2006	44.803
2007	44.381
2008	43.96
2009	39.72
2010	35.81
2011	37.85
2012	35.09
2013	37.78
2014	38.38
2015	38.58
2016	39.86
2017	40.27
2018	38.03
2019	39.64
2020	38.63
2021	37.11
2022	36.245
2023	37.4