| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 56416.23 |
| 8 | 2016 | 54318.30 |
| 9 | 2015 | 53682.17 |
| 10 | 2014 | 53198.41 |
| 11 | 2013 | 49780.84 |
| 12 | 2012 | 46196.84 |
| 13 | 2011 | 42133.22 |
| 14 | 2010 | 39766.59 |
| 15 | 2009 | 39330.60 |
| 16 | 2008 | 41160.11 |
