| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 37524.93 |
| 8 | 2016 | 36117.51 |
| 9 | 2015 | 35972.87 |
| 10 | 2014 | 35657.29 |
| 11 | 2013 | 35901.65 |
| 12 | 2012 | 34095.65 |
| 13 | 2011 | 35324.07 |
| 14 | 2010 | 33729.51 |
| 15 | 2009 | 34339.94 |
| 16 | 2008 | 38905.00 |
| 17 | 2007 | 37768.57 |
| 18 | 2006 | 35937.59 |
| 19 | 2005 | 35098.80 |
| 20 | 2004 | 35059.27 |
| 21 | 2003 | 32507.08 |
| 22 | 2002 | 31888.51 |
| 23 | 2001 | 31920.24 |
| 24 | 2000 | 30245.71 |
| 25 | 1999 | 27765.65 |
| 26 | 1998 | 27412.76 |
| 27 | 1997 | 27240.80 |
| 28 | 1996 | 26004.50 |
| 29 | 1995 | 26254.74 |
| 30 | 1994 | 25791.04 |
| 31 | 1993 | 24575.66 |
| 32 | 1992 | 23889.05 |
| 33 | 1991 | 23099.94 |
| 34 | 1990 | 21732.86 |
