| 年份 | Logistic模型 | Smith模型 | 真实值 |
| 2016 | 1.385 | 1.381 | 1.383 |
| 2017 | 1.394 | 1.391 | 1.390 |
| 2018 | 1.404 | 1.395 | 1.395 |
| 2019 | 1.411 | 1.399 | 1.400 |
| 2020 | 1.419 | 1.407 | 1.410 |
| 2021 | 1.427 | 1.412 | 1.411 |
| 2022 | 1.434 | 1.418 | 1.412 |