| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 24321.75 |
| 8 | 2016 | 23649.59 |
| 9 | 2015 | 24037.65 |
| 10 | 2014 | 24347.76 |
| 11 | 2013 | 24821.80 |
| 12 | 2012 | 25105.99 |
| 13 | 2011 | 26251.36 |
| 14 | 2010 | 25956.81 |
| 15 | 2009 | 25950.40 |
| 16 | 2008 | 26098.47 |
| 17 | 2007 | 25374.14 |
| 18 | 2006 | 24590.19 |
| 19 | 2005 | 24081.15 |
| 20 | 2004 | 23791.20 |
| 21 | 2003 | 23522.27 |
| 22 | 2002 | 23479.80 |
| 23 | 2001 | 23057.26 |
| 24 | 2000 | 21891.05 |
