The growth in asset management income accounts for roughly 35 percent of the growth of the financial sector as a percent of GDP, driven by the opaque fee structures, especially when it comes to alternative investment vehicles.36 But in spite of their high fees, there is little evidence of any advantages, for instance in better long-run performance, when it comes to higher management fees.37 Other key sources of financial profits have come from their privileged position in running the economy's payments system: ATM and sundry other fees levied on normal saving and checking accounts.