Year	% (modeled ILO estimate)
1991	46.265
1992	48.401
1993	51.186
1994	54.56
1995	55.079
1996	54.464
1997	53.151
1998	51.128
1999	52.523
2000	54.604
2001	54.194
2002	50.389
2003	51.911
2004	52.631
2005	53.695
2006	54.051
2007	52.738
2008	50.85
2009	51.135
2010	50.923
2011	48.341
2012	50.046
2013	49.528
2014	49.874
2015	49.326
2016	49.375
2017	49.503
2018	48.922
2019	48.25
2020	44.768
2021	45.63
2022	47.329
2023	47.286