The export tariff rate applicable in any month is determined by a sliding scale based on the international price of CPO in Rotterdam, a major market for vegetable oils. If the monthly average CIF price Rotterdam was less than USD 550/tonne then no export tax would be charged the following month, if between USD 550-649 then the rate would be set at 2.5%, between USD 650-749 at 5%, between USD 750-849 at 7.5%, and if above USD 850 at 10%. The regime was revised in February 2008 when the international price kept increasing, with new higher rates introduced. Under the revised regulation, if the monthly average CIF price Rotterdam is between USD 1100-1200/tonne, the tax rate is 15%, between USD 1 200-1 300 then 20%, and 30% if the price exceeds USD 1 300.