| Coefficients | Start Year, YS | ||
| 2020 | 2025 | 2030 | |
| A | −19.928 | −16.09 | −20.105 |
| B | 154.78 | 144.82 | 163.27 |
| C | 1866.9 | 1865.1 | 1837.4 |
| R2 | 1 | 1 | 1 |