Whether, in light of the fiscal pressures facing the economy and the commitment of the National Treasury to implement zero-based budgeting, the National Treasury has ever considered and/or is considering the implementation of (a) a balanced budget amendment to the Constitution of the Republic of SA, 1996, which requires that the State cannot spend more than its income or any similar amendment, (b) budget balance rules that require the primary budget balance to achieve a net balance of zero over a specified period of time or any similar rule, (c) debt rules which require the Government to place a growth ceiling on consolidated government debt or any similar rule, (d) expenditure rules that require government to place a growth ceiling on government expenditure or any similar rule and/or (e) revenue rules that require the Government to abide by certain limitations as it pertains to raising and introduction of taxes or any similar rule; if not, why not; if so, what are the relevant details?