Who owns most of the world's debt?

BANK OF CMRC 2 CITY National Association National Bank OF FL 12 COMMERCEONE Bank 6 Currie State Bank 1 Federated Bank 4 FIRST National Association National Bank MI 4 First National Bank of Sparta 4 FIRST NORTHERN Bank OF WY 9 First State Bank Minnesota 1 First State Bank of Red Wing 11 Gateway Commercial Bank 4 Grant County State Bank 6 HOMEBANK 11 Impact Bank 3 ITS Bank 2 NELNET Bank 20 Stephenson National Bank & Trust 13 UWHARRIE Bank 7 WASHINGTON TC OF WESTERLY 7 WEST COAST Community Bank 6