Table 2.

Unit root test results

Variable	Level		First difference
	Constant	Trend	Constant	Trend
lnit	−2.637*	−2.971	−4.573***	−4.709***
lnπet	−3.0923**	−2.953	−3.228**	−3.937**

Source: Author’s compilation

*,**,***Denote significance at 10, 5, and 1% levels