| lags | ADF | PP | KSS |
| t-Statistic | t-Statistic | t-Statistic | |
| 5 | −80.2347*** | −80.2347*** | −14.1395*** |
| 10 | −21.1022*** | −80.1512*** | −10.8130*** |
| 20 | −14.6596*** | −80.0157*** | −8.7144*** |