Year	0=less disclosure to 10=more disclosure
2005	4.446808510638298
2006	4.446808510638298
2007	4.446808510638298
2008	4.425531914893617
2009	4.595744680851064
2010	4.638297872340425
2011	4.723404255319149
2012	4.787234042553192
2013	4.851063829787234
2014	5.212765957446808
2015	5.340425531914893
2016	5.446808510638298
2017	5.468085106382978
2018	5.553191489361702
2019	5.553191489361702