Year	% (modeled ILO estimate)
1991	58.752
1992	56.571
1993	53.633
1994	51.315
1995	49.555
1996	47.679
1997	46.489
1998	47.394
1999	48.284
2000	48.255
2001	48.298
2002	46.634
2003	44.794
2004	42.479
2005	43.284
2006	44.988
2007	46.84
2008	48.364
2009	47.184
2010	47.65
2011	49.467
2012	48.327
2013	48.133
2014	47.407
2015	46.247
2016	46.681
2017	47.127
2018	48.511
2019	50.318
2020	49.387
2021	50.766
2022	52.431
2023	52.922