AgencyRatingOutlookDate
DBRSAAA Stable Sep 20 2012
S&PAAA Stable Feb 27 2001
Moody'sAaa Stable Aug 23 1999
Moody'sAa1 Positive Feb 10 1999
S&PAA+ Positive May 13 1998
S&PAA+ Stable Oct 08 1991
S&PAA Positive May 01 1990
S&PAA Stable Jun 26 1989
S&PAA N/A Mar 16 1987
Moody'sAa1 Stable Aug 15 1986
S&PAA+ N/A Jan 06 1983
S&PAAA N/A Mar 01 1981
Moody'sAa Stable Sep 06 1967