V = A3(1+ASG)(1+DG)
where:
V = trigger volume;
A3 = average level of imports from ASEAN in the 3 years immediately preceding the last year, expressed in metric tons; ASG = growth rate of the share of imports from ASEAN to total imports, a number agreed upon in ASEAN is 10% per year; and DG = growth rate of domestic consumption, a number agreed upon in ASEAN is 2% per year.