| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 6883.98 |
| 8 | 2016 | 6683.50 |
| 9 | 2015 | 6459.72 |
| 10 | 2014 | 6275.18 |
| 11 | 2013 | 6042.48 |
| 12 | 2012 | 6049.54 |
| 13 | 2011 | 6241.17 |
| 14 | 2010 | 6225.12 |
| 15 | 2009 | 6086.97 |
| 16 | 2008 | 5983.43 |
| 17 | 2007 | 5887.10 |
| 18 | 2006 | 5872.30 |
| 19 | 2005 | 5787.70 |
| 20 | 2004 | 5609.91 |
| 21 | 2003 | 5694.47 |
| 22 | 2002 | 5400.47 |
| 23 | 2001 | 5412.01 |
| 24 | 2000 | 4851.98 |
| 25 | 1999 | 5004.81 |
| 26 | 1998 | 4877.60 |
| 27 | 1997 | 4662.56 |
| 28 | 1996 | 4554.26 |
| 29 | 1995 | 4352.92 |
| 30 | 1994 | 4409.18 |
| 31 | 1993 | 4331.14 |
| 32 | 1992 | 4284.75 |
| 33 | 1991 | 4502.25 |
