| OLS | FE | Differential GMM | Systematic GMM |
| 0.8344*** | 0.5952*** | 0.9627*** | 0.7753*** |
| (11.89) | (6.11) | (5.28) | (7.35) |
| 0.1412*** | 0.1744*** | 0.4095** | 0.1997*** |
| (2.96) | (2.65) | (1.89) | (2.02) |
| −0.0946*** | −0.0801*** | −0.0560* | −0.0808*** |
| (−5.40) | (−2.97) | (−1.63) | (−2.35) |
| 0.0056 | 0.1374* | 0.4163** | 0.0103 |
| (0.44) | (1.32) | (1.85) | (0.57) |
| −0.0033 | −0.0522* | −0.2026*** | −0.0272*** |