| Variable name | ADF statistics | 5% critical value | 10% critical value | Conclusion |
| Y | 3.268132 | −3.875302 | −3.38833 | Nonstationary |
| X | −1.749808 | −3.759743 | −3.32497 | Nonstationary |
| T | 3.171568 | −3.875302 | −3.38833 | Nonstationary |
| D (Y) | −4.391426 | −3.875302 | −3.38833 | stable |
| D (X) | −3.834624 | −3.791172 | −3.34225 | stable |
| D (T) | −3.834624 | −3.791172 | −3.34225 | stable |