Variable

LLC inspection

Adjusted t value

ADF-Fisher test P

Conclusion

lnGPSI

−2.3318***

88.1815***

Stationary

lnGPTI

−3.8778***

101.8395***

Stationary

ER

−5.0748***

138.6623***

Stationary

lnIMI

−4.4801***

120.4449***

Stationary

lnTp

−4.5927***

110.8458***

Stationary