COMMONWEALTH OF MASSACHUSETTS/GENERAL OBLIGATION RATING HISTORY
DateMoody's
Investor's Service
Standard &
Poor's Corporation
Fitch
Ratings
Rating
Change
May-70Aa---- 
Jun-75A1----Downgrade
Aug-75A1AA-- 
May-80A1AA---Downgrade
Jun-84A1AA--Upgrade
Feb-88AaAA+--Upgrade
May-89AaAA--Downgrade
Jun-89AAA---Downgrade
Jul-89AA--Downgrade
Sep-89AAA 
Nov-89Baa1AADowngrade
Dec-89Baa1BBBADowngrade
Mar-90BaaBBBADowngrade
Sep-92AAAUpgrade
Oct-93AA+A+Upgrade
Nov-94A1A+A+Upgrade
Oct-97A1AA-A+Upgrade
Jan-98A1AA-AA-Upgrade
Apr-98Aa3AA-AA-Upgrade
Jan-00Aa2AA-AA-Upgrade
Mar-05Aa2AAAA-Upgrade
Jul-05Aa2AAAAUpgrade
Jul-06Aa2AAAA 
Jul-07Aa2AAAA 
Aug-08Aa2AAAA 
Sep-08Aa2AAAA 
Feb-09Aa2AAAA 
May-09Aa2AAAA 
Sep-09Aa2AAAA 
Apr-10Aa1AAAA+Upgrade
Feb-11Aa1Outlook PositiveAA+ 
Sep-11Aa1AA+AA+Upgrade