| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 47043.82 |
| 8 | 2016 | 47439.94 |
| 9 | 2015 | 48660.87 |
| 10 | 2014 | 48169.55 |
| 11 | 2013 | 51010.57 |
| 12 | 2012 | 51588.41 |
| 13 | 2011 | 51519.28 |
| 14 | 2010 | 47959.84 |
| 15 | 2009 | 44612.33 |
| 16 | 2008 | 42936.28 |
| 17 | 2007 | 42166.47 |
| 18 | 2006 | 41020.79 |
| 19 | 2005 | 38796.60 |
| 20 | 2004 | 35459.76 |
| 21 | 2003 | 30997.68 |
| 22 | 2002 | 29052.50 |
| 23 | 2001 | 26858.69 |
| 24 | 2000 | 24929.30 |
| 25 | 1999 | 23654.41 |
| 26 | 1998 | 26305.73 |
| 27 | 1997 | 25365.30 |
| 28 | 1996 | 23285.22 |
| 29 | 1995 | 21795.93 |
