| 年份 | 绝对额(亿元) | 比上年增长(%) | 所占总比重(%) |
| 2022 | 19,486 | −0.2 | 16.0 |
| 2021 | 19,565 | 16.6 | 16.4 |
| 2020 | 15,645 | 11.1 | 15.9 |
| 2019 | 12,276 | 11.3 | 14.2 |
| 2018 | 11,069 | 16.5 | 12.4 |