The following graph shows the market for loanable funds. The upward-sloping orange line represents the supply of loanable funds, and the downward-sloping blue line represents the demand for loanable funds. 0 100 200 300 400 500 600 700 800 900 1000 10 9 8 7 6 5 4 3 2 1 0 INTEREST RATE (Percent) LOANABLE FUNDS (Billions of dollars) Demand Supply is the source of the supply of loanable funds. As the interest rate falls, the quantity of loanable funds supplied . Suppose the interest rate is 4.5%. Based on the previous graph, the quantity of loanable funds supplied is