If governments want to stimulate investment and increase it to $9 trillion, what must it do?
Suppose that the quantity of loanable funds demanded increases by $1 trillion at each real interest rate and the quantity of loanable funds supplied increases by $2 trillion at each interest rate.

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Real interest rate percent per year Loanable funds demanded Loanable funds supplied (trillions of 2005 dollars) 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.5 6.0 6.5 6 7.5 8.0 8.5 10