More cushy cushion needed

The government declares they need an extra Rp 3 to 5 trillion emegency reserve in the 2010 budget to anticipate threatening world oil price. That would add to the currently allocated Rp 5.6 trillion.

As known, the state budget has assumed an oil price of USD 60 per barrel. Now the price stands around USD 70 already. And might even increase in the near future, considering the world economic recovery.

Now the budget also assumes that every USD 1 increase beyond the assumed USD 60 would add Rp 0.1 trillion to the deficit. Now, if Indonesian Crude Price (ICP) is USD 65 per barrel (usually it is USD 5 below the world oil price quoted in US market) then there is an increase of USD 5 trillion on top of the assumed price. According to the elasticity assumption, it should add Rp 0.5 trillion to the deficit. But, why ask Rp 3 to 5 trillion?