Original sentence: Securitization has evolved from its tentative beginnings in the late 1970s to an estimated outstanding of $10.24 trillion in the United States and $2.25 trillion in Europe as of the 2nd quarter of 2008
Edited sentence: Securitization has evolved from its tentative beginnings in the late 1970s to a vital funding source with an estimated outstanding of $10.24 trillion in the United States and $2.25 trillion in Europe as of the 2nd quarter of 2008