| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2024 | |
| 2 | 2023 | |
| 3 | 2022 | |
| 4 | 2021 | |
| 5 | 2020 | |
| 6 | 2019 | |
| 7 | 2018 | 29792.06 |
| 8 | 2017 | 28681.68 |
| 9 | 2016 | 27504.55 |
| 10 | 2015 | 26614.85 |
| 11 | 2014 | 26450.18 |
| 12 | 2013 | 25730.88 |
| 13 | 2012 | 24582.97 |
| 14 | 2011 | 25692.57 |
| 15 | 2010 | 27841.86 |
| 16 | 2009 | 29947.79 |
| 17 | 2008 | 30440.97 |
| 18 | 2007 | 28896.92 |
| 19 | 2006 | 28082.12 |
| 20 | 2005 | 25003.83 |
| 21 | 2004 | 24828.90 |
| 22 | 2003 | 23255.56 |
| 23 | 2002 | 21985.23 |
| 24 | 2001 | 20306.09 |
| 25 | 2000 | 18815.84 |
| 26 | 1999 | 17758.01 |
| 27 | 1998 | 17432.43 |
| 28 | 1997 | 16626.58 |
| 29 | 1996 | 15772.53 |
| 30 | 1995 | 15207.76 |
| 31 | 1994 | 14657.41 |
| 32 | 1993 | 14140.18 |
| 33 | 1992 | 14120.18 |
| 34 | 1991 | 13814.74 |
| 35 | 1990 | 13117.56 |
