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(as of August 31, 2019)
|Credit Rating Agency||Long-term Bond||Definition of ratings|
|Rating and Investment Information, Inc.||AA＋||Very high creditworthiness supported by some excellent factors|
|Moody's Investors Service||A1||Judged to be top intermediate and are subject to low credit risk|
|Standard & Poor's||AA－||Differs from the highest-rated obligations only to a small degree. Capacity to meet its financial commitment on the obligation is very strong.|