Year	% (modeled ILO estimate)
1991	72.506
1992	72.571
1993	72.634
1994	72.571
1995	72.43
1996	72.321
1997	72.178
1998	71.967
1999	71.771
2000	71.53
2001	71.458
2002	71.296
2003	70.778
2004	70.267
2005	69.716
2006	69.271
2007	68.441
2008	67.583
2009	66.651
2010	65.693
2011	64.821
2012	63.917
2013	63.017
2014	62.1
2015	61.149
2016	60.254
2017	59.374
2018	58.352
2019	53.977
2020	52.197
2021	51.836
2022	54.942
2023	56.761