Year	0=less disclosure to 10=more disclosure
2005	4.409090909090909
2006	4.454545454545454
2007	4.818181818181818
2008	5.5
2009	5.909090909090909
2010	6.045454545454546
2011	6.2272727272727275
2012	6.363636363636363
2013	6.409090909090909
2014	6.590909090909091
2015	7
2016	7.2272727272727275
2017	7.2727272727272725
2018	7.363636363636363
2019	7.636363636363637