| Coefficients (a) | ||||||
| Model | Unstandardized Coefficients | Standardized Coefficients | t | Sig. | ||
| B | Std. Error | Beta | B | Std. Error | ||
| 1 | (Constant) | −2201.505 | 238.381 | −9.235 | 0.000 | |
| year | 1.117 | 0.120 | 0.785 | 9.314 | 0.000 | |