Year	0=less disclosure to 10=more disclosure
2005	4.045454545454546
2006	4.045454545454546
2007	4.045454545454546
2008	4.045454545454546
2009	4.2272727272727275
2010	4.2272727272727275
2011	4.318181818181818
2012	4.386363636363637
2013	4.454545454545454
2014	4.818181818181818
2015	4.886363636363637
2016	4.931818181818182
2017	5.0227272727272725
2018	5.204545454545454
2019	5.2272727272727275