Year	0=less disclosure to 10=more disclosure
2005	4.19672131147541
2006	4.245901639344262
2007	4.245901639344262
2008	4.344262295081967
2009	4.475409836065574
2010	4.557377049180328
2011	4.557377049180328
2012	4.672131147540983
2013	4.721311475409836
2014	4.934426229508197
2015	4.983606557377049
2016	4.983606557377049
2017	5.081967213114754
2018	5.098360655737705
2019	5.229508196721311