The euro area-wide introduction of non-marketable assets as eligible collateral in Eurosystem credit operations as of 1 January 2007 was combined with the first, but still limited, use of internal ratings-based systems by Eurosystem counterparties as a new source of credit assessment.
Тяхното използване достигна 0.1 трилиона евро през 2007 г., което представлява 1% от общия размер на допустимите обезпечения в Евросистемата.