Null Hypothesis: D (IPC) has a unit root

Exogenous: Constant

Lag Length: 4 (Automatic - based on SIC, maxlag = 7)

t-Statistic

Prob.*

Augmented Dickey-Fuller test statistic

−2.830783

0.0683

Test critical values:

1% level

−3.724070

5% level

−2.986225

10% level

−2.632604