Type (c, t, k)

ADF statistics

1% level

5% level

Prob.

Conclusion

lpri

(c, -, 2)

−1.120573

−3.481623

−2.883930

0.7064

unit root

D (lpri)

(c, -, 1)

−6.498407

−3.480425

−2.883408

0.0000

no unit root

bdiavg

(c, -, 1)

−2.536288

−3.481217

−2.883753

0.1093

unit root

D (bdiavg)

(c, -, 0)

−7.309591

−3.481217

−2.883753

0.0000

no unit root

dollar

(c, -, 1)

−1.474510

−3.481217

−2.883753

0.5435

unit root

D (dollar)

(c, -, 0)

−7.548273

−3.481217

−2.883753

0.0000

no unit root

limport

(c, t, 2)

−3.390897

−4.031309

−3.445308

0.0571

unit root

D (limport)

(c, t, 1)

−12.65140

−4.030729

−3.445030

0.0000

no unit root

loredo

(c, t, 2)

−1.434483

−4.030729

−3.445030

0.8463

unit root

D (loredo)

(c, t, 1)

−12.61083

−4.030729

−3.445030

0.0000

no unit root

loreint

(c, t, 12)

−3.206301

−4.036983

−3.448021

0.0882

unit root

D (loreint)

(c, t, 12)

−4.861461

−4.037668

−3.448348

0.0007

no unit root