| Variable | Levels | 1st Differencing | 2nd Differencing | |||
| GDP PER CAPITA | Constant | Trend and Intercept | Constant | Trend and Intercept | Constant | Trend and Intercept |
| T-Statistic Values | 0.181440 | −1.946884 | −5.627281 | −5.904344 | −1.024724 | −1.126402 |
| Critical Values at 5% level | −2.971853 | −3.580623 | −2.976263 | −3.587527 | −3.020686 | −3.658446 |
| Probability | 0.9663 | 0.6037 | 0.0001 | 0.0003 | 0.7235 | 0.8984 |
| Critical Values | −3.5 | −3.5 | −3.5 | |||