Table 1 Unit Root Test

 EXCR

−2.1617

−0.9660

−2.1196

− 0.9762

 GDPG

−4.4096

− 4.7044^b

− 2.8107

− 2.5251

 INFR

−3.3827^a

− 3.8371^a

−2.4424

− 2.5542

 INTR

−3.5806^a

− 3.5232

− 3.6007^a

−3.6311

 TRDO

−0.7895

− 1.4466

− 1.8110

− 0.0517

 EXCR

−5.1581-^c

−5.7296^c

−4.2031^c

− 5.7286^c

 GDPG

−5.9176^c

− 5.8603^c

−5.9144^c

−6.2571^c

 INFR

−4.8311^c

−4.8610^b

−6.8773^c

−7.3084^c

 INTR

−6.2267^c

− 6.6417^c

− 7.4399^c

 TRDO

−3.3199^c

−4.4918^a

−4.3199^b

− 4.5144^b