| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 46274.74 |
| 8 | 2016 | 45538.97 |
| 9 | 2015 | 43844.60 |
| 10 | 2014 | 42999.10 |
| 11 | 2013 | 41290.30 |
| 12 | 2012 | 39664.66 |
| 13 | 2011 | 39892.20 |
| 14 | 2010 | 40027.29 |
| 15 | 2009 | 38597.40 |
| 16 | 2008 | 37267.94 |
| 17 | 2007 | 37226.46 |
| 18 | 2006 | 35480.19 |
| 19 | 2005 | 33895.85 |
| 20 | 2004 | 31384.45 |
| 21 | 2003 | 31558.66 |
| 22 | 2002 | 32047.84 |
| 23 | 2001 | 31627.83 |
| 24 | 2000 | 30599.02 |
| 25 | 1999 | 29913.27 |
| 26 | 1998 | 28971.58 |
| 27 | 1997 | 27891.73 |
| 28 | 1996 | 26410.43 |
| 29 | 1995 | 25599.97 |
| 30 | 1994 | 24863.69 |
| 31 | 1993 | 24869.00 |
| 32 | 1992 | 23932.54 |
| 33 | 1991 | 22265.68 |
