| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | |
| 8 | 2016 | |
| 9 | 2015 | |
| 10 | 2014 | |
| 11 | 2013 | 27571.25 |
| 12 | 2012 | 25863.60 |
| 13 | 2011 | 25105.57 |
| 14 | 2010 | 25001.75 |
| 15 | 2009 | 24869.57 |
| 16 | 2008 | 25843.10 |
| 17 | 2007 | 26301.64 |
| 18 | 2006 | 27344.69 |
| 19 | 2005 | 27744.42 |
| 20 | 2004 | 27500.58 |
| 21 | 2003 | 26470.72 |
| 22 | 2002 | 26577.97 |
| 23 | 2001 | 26108.46 |
| 24 | 2000 | 26002.43 |
| 25 | 1999 | 26913.15 |
| 26 | 1998 | 25211.10 |
| 27 | 1997 | 25355.74 |
| 28 | 1996 | 26335.27 |
| 29 | 1995 | 25431.32 |
| 30 | 1994 | 25011.99 |
| 31 | 1993 | 23977.57 |
| 32 | 1992 | 23645.37 |
| 33 | 1991 | 22361.31 |
