Year	0=less disclosure to 10=more disclosure
2005	4.73469387755102
2006	4.836734693877551
2007	5
2008	5.3061224489795915
2009	5.489795918367347
2010	5.591836734693878
2011	5.816326530612245
2012	6.020408163265306
2013	6.163265306122449
2014	6.224489795918367
2015	6.408163265306122
2016	6.510204081632653
2017	6.530612244897959
2018	6.5
2019	6.66