Year	0=less disclosure to 10=more disclosure
2005	4.6284210526315785
2006	4.670526315789473
2007	4.728421052631579
2008	4.812631578947368
2009	4.928421052631579
2010	4.981052631578947
2011	5.070526315789474
2012	5.186315789473684
2013	5.265263157894736
2014	5.454736842105263
2015	5.549473684210527
2016	5.612631578947369
2017	5.665263157894738
2018	5.740314136125655
2019	5.829319371727749