Year	0=less disclosure to 10=more disclosure
2005	3.8947368421052633
2006	3.8947368421052633
2007	3.8947368421052633
2008	3.9473684210526314
2009	4.065789473684211
2010	4.131578947368421
2011	4.2105263157894735
2012	4.2894736842105265
2013	4.355263157894737
2014	4.644736842105263
2015	4.7631578947368425
2016	4.855263157894737
2017	4.907894736842105
2018	5.065789473684211
2019	5.118421052631579