Year	% (modeled ILO estimate)
1991	58.824
1992	56.956
1993	53.339
1994	52.031
1995	52.555
1996	52.803
1997	53.901
1998	55.739
1999	57.912
2000	59.366
2001	60.457
2002	60.696
2003	61.156
2004	61.492
2005	63.071
2006	63.876
2007	63.979
2008	61.627
2009	55.71
2010	54.022
2011	52.604
2012	49.868
2013	48.679
2014	49.549
2015	51.209
2016	52.535
2017	53.798
2018	54.804
2019	55.333
2020	53.285
2021	54.366
2022	55.629
2023	56.237