Variable

Order of Integration

ADF Test Statistics

Critical ADF Test Statistics

GSMEP

I (0)

−4.259614

−3.562882**

GOVEX

I (1)

−5.144902

−4.356068*

EXR

I (1)

−3.508215

−3.218382***

INF

I (1)

−6.498309

−4.416345*

INTR

I (0)

−5.876755

−4.356068*

TARRI

I (1)

−4.629604

−4.374307*

TAXES

I (1)

−5.613439

−4.296729*

TO

I (1)

−5.479442

−4.323979*