| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2022 | |
| 2 | 2021 | |
| 3 | 2020 | |
| 4 | 2019 | |
| 5 | 2018 | |
| 6 | 2017 | |
| 7 | 2016 | |
| 8 | 2015 | |
| 9 | 2014 | |
| 10 | 2013 | |
| 11 | 2012 | 30561.08 |
| 12 | 2011 | 29370.47 |
| 13 | 2010 | 30026.91 |
| 14 | 2009 | 29381.90 |
| 15 | 2008 | 29082.59 |
| 16 | 2007 | 26191.73 |
| 17 | 2006 | 27311.42 |
| 18 | 2005 | 28968.99 |
| 19 | 2004 | 28409.06 |
| 20 | 2003 | 23727.84 |
| 21 | 2002 | 24668.23 |
| 22 | 2001 | 26386.91 |
| 23 | 2000 | 24021.96 |
| 24 | 1999 | 27471.83 |
| 25 | 1998 | 26043.54 |
| 26 | 1997 | 23207.34 |
| 27 | 1996 | 21023.87 |
| 28 | 1995 | 21862.00 |
| 29 | 1994 | 21296.30 |
