<Tr> <Td> 900 </Td> <Td> Net Interest </Td> <Td> Function 900 consists primarily of the interest paid by the federal government to private and foreign government holders of U.S. Treasury securities . This amount is slightly offset by interest income received by the federal government on loans and cash balances and by earnings of the National Railroad Retirement Investment Trust . </Td> </Tr> <Tr> <Td> 920 </Td> <Td> Allowances </Td> <Td> This function displays the budgetary effect of proposals that cannot easily be distributed across other budget functions . In the past, this function has included funding for emergencies or proposals contingent on certain events . </Td> </Tr> <Tr> <Td> 950 </Td> <Td> Undistributed Offsetting Receipts </Td> <Td> This function comprises major offsetting receipt items that would distort the funding levels of other functional categories if they were distributed to them . </Td> </Tr>

When was the last time congress passed a budget