Year	% (modeled ILO estimate)
1991	50.564
1992	50.682
1993	50.517
1994	49.953
1995	50.242
1996	54.627
1997	54.677
1998	55.772
1999	56.108
2000	55.827
2001	56.786
2002	57.46
2003	56.786
2004	56.281
2005	56.314
2006	56.946
2007	57.224
2008	58.857
2009	58.776
2010	56.86
2011	57.631
2012	57.947
2013	58.13
2014	58.811
2015	59.222
2016	59.684
2017	59.429
2018	59.688
2019	60.007
2020	59.38
2021	58.92
2022	58.672
2023	58.772