Transfers into the reinvestment portion of the Montana growth and opportunity trust established in 17-1-401 are allocated as follows: (1) 80% to the pension fund provided for in 17-7-135 until the balance in the fund equals $1 billion; and (2) 20% to a Montana housing trust provided for in 90-6-150 until the balance in the Montana housing trust equals $500 million. (3) Any remaining transfer amount must remain in the reinvestment portion of the trust and is not allocated to any purpose.