Level GDP OILPRICE WAGE EMP EXCH INT
Intercept & Trend -2.936471 -2.802775 -1.824772 -1.415815 -1.463702 -3.825480
Intercept -4.928854 -0.410148 -3.129298 -1.357319 -3.261111 -0.552589
None 6.360143 1.252204 0.507791 10.01518 0.806177 -1.256657
Decision non-stationary non-stationary non-stationary non-stationary non-stationary non-stationary
1st Difference            
Intercept & Trend -11.52643* -8.847866* -3.555053* -8.615808* -8.321831* -7.909091*
Intercept -2.193053* -8.851690* -1.644133* -8.597221* -7.536033* -7.891871*
None -1.541593* -8.709262* -1.862996* -1.180717* -7.346471* -7.800551*
Decision stationary stationary stationary stationary stationary stationary
Classification I(1) I(1) I(1) I(1) I(1) I(1)
Table 4: Unit root test (ADF test) results.