| ADF Test | PP Test | KKPS Test | |||||||
| Calculated Value | Critical Value (Level at 5%) | Integration order | Calculated Value | Critical Value (Level at 5%) | Integration order | Calculated Value | Critical Value (Level at 5%) | Integration order | |
| Gdp | −1.46 | −3.53 | I (1) | −1.46 | −3.55 | I (1) | −2.41 | −3.53 | I (1) |
| Erre | −3.16 | −4.22 | I (1) | −3.16 | −3.53 | I (1) | −2.43 | −3.53 | I (1) |
| Open | −2 | −3.53 | I (1) | −2 | −3.53 | I (1) | −1.93 | −3.53 | I (1) |
| Posext | −2.63 | −3.53 | I (1) | −2.63 | −3.54 | I (1) | −0.09 | −3.53 | I (1) |
| Tot | −0.45 | −3.53 | I (1) | −0.45 | −3.54 | I (1) | −0.78 | −3.53 | I (1) |
| Invest | −2.94 | −3.53 | I (1) | −2.94 | −3.54 | I (1) | −1.54 | −3.53 | I (1) |
| Pubspend | −2.94 | −3.53 | I (1) | −1.54 | −3.54 | I (1) | −2.23 | −3.53 | I (1) |
| Prod | −1.45 | −3.53 | I (1) | −1.89 | −3.54 | I (1) | −2.45 | −3.53 | I (1) |