Year	% (modeled ILO estimate)
1991	56.567
1992	56.555
1993	56.581
1994	56.422
1995	56.29
1996	56.452
1997	56.454
1998	56.419
1999	56.307
2000	56.195
2001	56.382
2002	56.471
2003	56.641
2004	56.603
2005	56.683
2006	56.974
2007	57.234
2008	57.399
2009	57.525
2010	57.605
2011	57.945
2012	58.122
2013	58.215
2014	58.283
2015	58.657
2016	58.131
2017	57.517
2018	54.866
2019	51.271
2020	47.213
2021	48.49
2022	48.235
2023	48.64