Year	0=less disclosure to 10=more disclosure
2005	4
2006	4
2007	4
2008	4
2009	4
2010	4.117647058823529
2011	4.117647058823529
2012	4.117647058823529
2013	4.235294117647059
2014	4.529411764705882
2015	4.705882352941177
2016	4.882352941176471
2017	4.882352941176471
2018	5.117647058823529
2019	5.117647058823529