Year	% (modeled ILO estimate)
1991	56.385
1992	55.739
1993	54.27
1994	54.589
1995	53.653
1996	52.71
1997	51.719
1998	50.405
1999	49.8
2000	49.143
2001	49.661
2002	47.473
2003	47.08
2004	47.212
2005	43.278
2006	44.242
2007	47.492
2008	48.276
2009	46.811
2010	46.487
2011	45.9
2012	48.566
2013	47.475
2014	46.342
2015	45.657
2016	46.328
2017	46.617
2018	47.305
2019	48.089
2020	46.62
2021	43.785
2022	44.745
2023	45.752