Year	% (modeled ILO estimate)
1991	66.359
1992	66.26
1993	65.479
1994	64.69
1995	63.892
1996	63.086
1997	62.273
1998	61.453
1999	60.626
2000	59.792
2001	58.953
2002	58.109
2003	56.456
2004	54.79
2005	53.112
2006	51.429
2007	49.743
2008	48.058
2009	46.379
2010	44.709
2011	43.053
2012	41.519
2013	40.001
2014	38.503
2015	37.026
2016	35.574
2017	34.148
2018	32.75
2019	32.483
2020	32.176
2021	32.104
2022	31.74
2023	31.86