Year	0=less disclosure to 10=more disclosure
2005	4.267605633802817
2006	4.295774647887324
2007	4.373239436619718
2008	4.47887323943662
2009	4.633802816901408
2010	4.690140845070423
2011	4.76056338028169
2012	4.852112676056338
2013	4.901408450704225
2014	5.119718309859155
2015	5.246478873239437
2016	5.352112676056338
2017	5.415492957746479
2018	5.528169014084507
2019	5.626760563380282