| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 39730.36 |
| 8 | 2016 | 39348.21 |
| 9 | 2015 | 39890.28 |
| 10 | 2014 | 41318.58 |
| 11 | 2013 | 41707.69 |
| 12 | 2012 | 41130.95 |
| 13 | 2011 | 41454.90 |
| 14 | 2010 | 40061.97 |
| 15 | 2009 | 37533.82 |
| 16 | 2008 | 37808.32 |
| 17 | 2007 | 36848.47 |
| 18 | 2006 | 35277.83 |
| 19 | 2005 | 34687.58 |
| 20 | 2004 | 34393.72 |
| 21 | 2003 | 33819.54 |
| 22 | 2002 | 33823.37 |
| 23 | 2001 | 33953.56 |
| 24 | 2000 | 34470.85 |
| 25 | 1999 | 34011.66 |
| 26 | 1998 | 34579.60 |
| 27 | 1997 | 34887.71 |
| 28 | 1996 | 34684.16 |
| 29 | 1995 | 33457.02 |
| 30 | 1994 | 32751.94 |
| 31 | 1993 | 31562.10 |
| 32 | 1992 | 30993.40 |
| 33 | 1991 | 31917.44 |
