Year	0=less disclosure to 10=more disclosure
2005	4.627450980392157
2006	4.686274509803922
2007	4.8431372549019605
2008	5.03921568627451
2009	5.1568627450980395
2010	5.176470588235294
2011	5.254901960784314
2012	5.450980392156863
2013	5.450980392156863
2014	5.549019607843137
2015	5.7254901960784315
2016	5.784313725490196
2017	5.862745098039215
2018	5.901960784313726
2019	6.019607843137255