| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 47735.62 |
| 8 | 2016 | 47294.82 |
| 9 | 2015 | 47009.31 |
| 10 | 2014 | 48158.17 |
| 11 | 2013 | 48598.97 |
| 12 | 2012 | 48453.22 |
| 13 | 2011 | 50568.73 |
| 14 | 2010 | 48532.80 |
| 15 | 2009 | 48427.76 |
| 16 | 2008 | 49303.77 |
| 17 | 2007 | 48665.97 |
| 18 | 2006 | 50037.33 |
| 19 | 2005 | 49743.13 |
| 20 | 2004 | 52530.85 |
| 21 | 2003 | 50878.17 |
| 22 | 2002 | 48849.33 |
| 23 | 2001 | 48717.30 |
| 24 | 2000 | 50209.91 |
| 25 | 1999 | 52227.02 |
| 26 | 1998 | 54325.39 |
| 27 | 1997 | 51566.40 |
| 28 | 1996 | 50568.12 |
| 29 | 1995 | 50113.29 |
| 30 | 1994 | 51354.32 |
| 31 | 1993 | 51969.68 |
| 32 | 1992 | 53223.93 |
| 33 | 1991 | 50811.12 |
