There shall be paid into the fund:
1. Appropriations. All money appropriated from the General Fund for inclusion in the fund;
2. Repayment of advances. Subject to any pledge, contract or other obligation under section 4855, any money which the Maine State Housing Authority receives in repayment of advances from the fund;
3. Gains from investments. Subject to any pledge, contract or other obligation under this section, all interest, dividends and pecuniary gains from the investment of money of the fund;
3-A. Nonlapsing revolving loan funds. Any funds remaining in a revolving loan fund administered by the Maine State Housing Authority for a period longer than 10 years and directed by the Maine State Housing Authority to be paid into the fund; and
4. Other money. Any other money available to the Maine State Housing Authority and directed by the Maine State Housing Authority to be paid into the fund.