Year	0=less disclosure to 10=more disclosure
2005	4.7
2006	4.7
2007	4.85
2008	4.85
2009	4.9
2010	4.9
2011	4.9
2012	4.95
2013	5.05
2014	5.3
2015	5.3
2016	5.3
2017	5.3
2018	5.3
2019	5.7