| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 16469.42 |
| 8 | 2016 | 16182.07 |
| 9 | 2015 | 15949.72 |
| 10 | 2014 | 15535.88 |
| 11 | 2013 | 15337.92 |
| 12 | 2012 | 15001.96 |
| 13 | 2011 | 14698.14 |
| 14 | 2010 | 14409.37 |
| 15 | 2009 | 14254.94 |
| 16 | 2008 | 14858.69 |
| 17 | 2007 | 14587.74 |
| 18 | 2006 | 14356.82 |
| 19 | 2005 | 14196.64 |
| 20 | 2004 | 14154.14 |
| 21 | 2003 | 13989.78 |
| 22 | 2002 | 14017.27 |
| 23 | 2001 | 14266.42 |
| 24 | 2000 | 14262.86 |
| 25 | 1999 | 14126.22 |
| 26 | 1998 | 13623.47 |
| 27 | 1997 | 13592.34 |
| 28 | 1996 | 13562.97 |
| 29 | 1995 | 13297.38 |
| 30 | 1994 | 13013.48 |
| 31 | 1993 | 13022.41 |
| 32 | 1992 | 13458.57 |
| 33 | 1991 | 13830.40 |
