One of the single best sources of information about financial institutions is the U.S. Flow of Funds report, produced by the Federal Reserve. This document contains data on most financial intermediaries. Go to https://www.federalreserve.gov/releases/Z1/and find the release for 2018 & 2019 (quarterly data). Answer the following questions:

What percentage of assets do commercial banks hold in loans?

What percentage of assets is held in mortgage loans?

What percentage of assets do commercial banks hold as secondary reserves?