Search YEAR20172018 TYPEEventsNewsNews ReleasesPresentationsSpeechesVideo Moody’s Rating 2015 Jul 30, 2015 Standard & Poor’s Rating 2015 Jun 3, 2015 Moody’s Rating 2014 Dec 3, 2014 Standard & Poor’s Rating 2014 Jun 4, 2014 Moody’s Rating 2013 Nov 27, 2013 Standard & Poor’s Rating 2013 Jul 26, 2013