Year	0=less disclosure to 10=more disclosure
2005	4.909090909090909
2006	5
2007	5
2008	5
2009	5.181818181818182
2010	5.181818181818182
2011	5.363636363636363
2012	5.545454545454546
2013	5.545454545454546
2014	5.545454545454546
2015	5.545454545454546
2016	5.7272727272727275
2017	5.7272727272727275
2018	5.7272727272727275
2019	5.7272727272727275