| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 35839.51 |
| 8 | 2016 | 35135.05 |
| 9 | 2015 | 35879.04 |
| 10 | 2014 | 36233.23 |
| 11 | 2013 | 34687.43 |
| 12 | 2012 | 35641.40 |
| 13 | 2011 | 35019.54 |
| 14 | 2010 | 35267.37 |
| 15 | 2009 | 35958.98 |
| 16 | 2008 | 37241.84 |
| 17 | 2007 | 36833.52 |
| 18 | 2006 | 36810.68 |
| 19 | 2005 | 34230.47 |
| 20 | 2004 | 33276.73 |
| 21 | 2003 | 33760.98 |
| 22 | 2002 | 33358.07 |
| 23 | 2001 | 32638.39 |
| 24 | 2000 | 33845.89 |
| 25 | 1999 | 33422.69 |
| 26 | 1998 | 34173.31 |
| 27 | 1997 | 33928.16 |
| 28 | 1996 | 32958.71 |
| 29 | 1995 | 33213.01 |
| 30 | 1994 | 34442.51 |
| 31 | 1993 | 35001.49 |
| 32 | 1992 | 34568.73 |
| 33 | 1991 | 36300.26 |
