Variable

Null Hypothesis

ADF t stat

Prob.

Has Unit Root

$i_t$

Unit root exists

−2.825

0.096

No

$\left(y_t-y^{*}\right)$

−5.441

0.000

No

$\left({\pi }_t-{\pi }^{*}\right)$

−2.602

0.087

No

$\left(u_t-u^{*}\right)$

−3.331

0.015

No