| Augmented Dickey-Fuller (ADF) Test | Phillip Perron (PP) Test | |||
| Level | ||||
| Variable | Intercept and Trend | Intercept and Trend | ||
| Aggregate goods | −1.323(2) | −3.468(1) | ||
| Consumer goods | −2.449(2) | −8.962(1) | ||
| Intermediate goods | −2.487(1) | −2.079(2) | ||
| Capital goods | −2.593(1) | −2.444(1) | ||
| GDP | −2.553(2) | −2.663(3) | ||
| REER | −5.989(1) | −8.034(3) | ||
| Foreign Exchange Reserve | −1.672(2) | −2.021(1) | ||
| Average tariff rate | −2.113(2) | −3.210(1) | ||
| First Difference | ||||
| Variable | Intercept and Trend | Intercept and Trend |
| |
| Aggregate goods | −3.549(8) | −9.773(1) | ||
| Consumer goods | −3.556(2) | −8.985(1) | ||
| Intermediate goods | −3.749(2) | −9.038(1) | ||
| Capital goods | −3.386(2) | −9.031(1) | ||
| GDP | −3.703(4) | −16.190(1) | ||
| REER | −3.26(3) | −8.131(1) | ||
| Foreign Exchange Reserve | −3.642(6) | −9.157(1) | ||
| Average tariff rate | −3.36(10) | −11.241(1) | ||