| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2024 | |
| 2 | 2023 | |
| 3 | 2022 | |
| 4 | 2021 | |
| 5 | 2020 | |
| 6 | 2019 | |
| 7 | 2018 | 25096.13 |
| 8 | 2017 | 23973.06 |
| 9 | 2016 | 23023.09 |
| 10 | 2015 | 22484.37 |
| 11 | 2014 | 23958.11 |
| 12 | 2013 | 23754.13 |
| 13 | 2012 | 21367.22 |
| 14 | 2011 | 20159.93 |
| 15 | 2010 | 18641.81 |
| 16 | 2009 | 17389.01 |
| 17 | 2008 | 17278.47 |
| 18 | 2007 | 16581.22 |
| 19 | 2006 | 14965.77 |
| 20 | 2005 | 13226.15 |
| 21 | 2004 | 11777.11 |
| 22 | 2003 | 10532.45 |
| 23 | 2002 | 9504.45 |
| 24 | 2001 | 8568.09 |
| 25 | 2000 | 7418.20 |
| 26 | 1999 | 6625.78 |
| 27 | 1998 | 6283.55 |
| 28 | 1997 | 6177.92 |
| 29 | 1996 | 5836.07 |
| 30 | 1995 | 5595.43 |
| 31 | 1994 | 5860.35 |
| 32 | 1993 | 6477.35 |
| 33 | 1992 | 6945.09 |
| 34 | 1991 | 7192.80 |
| 35 | 1990 | 7874.19 |
