a D(LNOILPRICE) R-squared D-W AIC SC HQC Model (3) D(LNGDP) 0.020477* 0.022731 0.012592 1.945231 -4.076679 -4.024894 -4.055715 (6.538369) (1.123621)               Model (4) D(LNGDP)     0.039911 -0.413791 1.351795 -3.737534 -3.711641 -3.727052     (1.671209)

Table 2: Estimation results for model (3) and model (4). Model (3) includes an intercept. Model (4) presents without intercept. T-statistics are given in parentheses. *indicates statistical significance at the 5% level. R²: coefficient of determination, D-W: Durbin Watson statistic, AIC: Akaike Information Criterion, SC: Schwarz Criterion, HQC: Hannan-Quinn Criterion.