Year	% (modeled ILO estimate)
1991	54.511
1992	50.768
1993	47.461
1994	46.582
1995	45.809
1996	46.066
1997	46.527
1998	47.579
1999	49.13
2000	49.415
2001	50.56
2002	51.144
2003	50.991
2004	50.407
2005	51.902
2006	52.455
2007	53.251
2008	53.534
2009	52.633
2010	51.666
2011	51.826
2012	52.017
2013	51.334
2014	51.073
2015	50.676
2016	50.268
2017	50.558
2018	51.78
2019	52.327
2020	51.089
2021	51.978
2022	53.609
2023	54.077