Year	% (modeled ILO estimate)
1991	67.696
1992	68.067
1993	67.232
1994	66.525
1995	64.907
1996	62.612
1997	61.12
1998	56.38
1999	52.842
2000	53.511
2001	55.378
2002	55.431
2003	54.779
2004	56.213
2005	54.471
2006	54.286
2007	53.82
2008	54.102
2009	53.636
2010	53.166
2011	54.748
2012	54.46
2013	52.483
2014	49.376
2015	48.154
2016	47.063
2017	46.099
2018	47.133
2019	45.489
2020	44.608
2021	43.718
2022	43.394
2023	43.757