| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2022 | |
| 2 | 2021 | |
| 3 | 2020 | |
| 4 | 2019 | |
| 5 | 2018 | |
| 6 | 2017 | |
| 7 | 2016 | 12811.15 |
| 8 | 2015 | 12783.86 |
| 9 | 2014 | 12970.77 |
| 10 | 2013 | 13274.12 |
| 11 | 2012 | 13172.83 |
| 12 | 2011 | 12383.79 |
| 13 | 2010 | 12984.87 |
| 14 | 2009 | 11763.02 |
| 15 | 2008 | 10150.08 |
| 16 | 2007 | 9916.90 |
| 17 | 2006 | 8780.02 |
| 18 | 2005 | 8741.61 |
| 19 | 2004 | 8209.49 |
| 20 | 2003 | 8440.24 |
| 21 | 2002 | 8372.55 |
| 22 | 2001 | 6942.68 |
| 23 | 2000 | 7706.24 |
