| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 15657.21 |
| 8 | 2016 | 13849.02 |
| 9 | 2015 | 15146.68 |
| 10 | 2014 | 14640.68 |
| 11 | 2013 | 14189.75 |
| 12 | 2012 | 14192.77 |
| 13 | 2011 | 14007.77 |
| 14 | 2010 | 14017.33 |
| 15 | 2009 | 13787.04 |
| 16 | 2008 | 13645.36 |
| 17 | 2007 | 13372.10 |
| 18 | 2006 | 13203.89 |
| 19 | 2005 | 13052.66 |
| 20 | 2004 | 12727.83 |
| 21 | 2003 | 12330.47 |
| 22 | 2002 | 11848.54 |
| 23 | 2001 | 12116.06 |
| 24 | 2000 | 11912.94 |
| 25 | 1999 | 11763.53 |
| 26 | 1998 | 11370.07 |
| 27 | 1997 | 11011.60 |
| 28 | 1996 | 10985.53 |
| 29 | 1995 | 11076.69 |
| 30 | 1994 | 10821.74 |
| 31 | 1993 | 11139.03 |
| 32 | 1992 | 11351.51 |
| 33 | 1991 | 11549.59 |
