How important was the lender-of-last-resort function of the Federal Reserve in the financial crisis of 2007-2009? Beginning

Question:

How important was the lender-of-last-resort function of the Federal Reserve in the financial crisis of 2007-2009? Beginning in 2000, plot the ratio of (in percent) of borrowing from the Fed (FRED code: DISCBORR) to its asset holdings (FRED code: WRESCRT). What happened to the borrowing ratio during the 2007-2009 financial crisis?