Equation (7) indicates short-run adjustment toward long-run equilibrium with the change
in oil prices at the same period and others, manufacturing production index and im-
ported price in term of dollar. No autocorrelation is specied in this model at 0.05 level
of signicance. Coecient of adjustment is -0.1406, which means the error correction
process will take place from the actual value to the long-run equilibrium by 0.1406 in
each period or each month).