| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 52205.40 |
| 8 | 2016 | 51172.39 |
| 9 | 2015 | 47546.82 |
| 10 | 2014 | 45627.21 |
| 11 | 2013 | 45019.53 |
| 12 | 2012 | 44645.42 |
| 13 | 2011 | 46194.70 |
| 14 | 2010 | 44979.40 |
| 15 | 2009 | 42910.96 |
| 16 | 2008 | 42526.38 |
| 17 | 2007 | 40954.73 |
| 18 | 2006 | 39755.55 |
| 19 | 2005 | 37825.32 |
| 20 | 2004 | 38676.99 |
| 21 | 2003 | 37313.25 |
| 22 | 2002 | 36776.55 |
| 23 | 2001 | 36110.63 |
| 24 | 2000 | 36347.03 |
| 25 | 1999 | 35855.10 |
| 26 | 1998 | 35248.64 |
| 27 | 1997 | 34964.88 |
| 28 | 1996 | 35695.09 |
| 29 | 1995 | 34673.54 |
| 30 | 1994 | 34531.03 |
| 31 | 1993 | 34320.75 |
| 32 | 1992 | 33542.80 |
| 33 | 1991 | 31638.33 |
