| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 57255.57 |
| 8 | 2016 | 57751.35 |
| 9 | 2015 | 57495.17 |
| 10 | 2014 | 56471.34 |
| 11 | 2013 | 55175.68 |
| 12 | 2012 | 55816.70 |
| 13 | 2011 | 56078.10 |
| 14 | 2010 | 57628.54 |
| 15 | 2009 | 53648.57 |
| 16 | 2008 | 55196.24 |
| 17 | 2007 | 53867.96 |
| 18 | 2006 | 52622.57 |
| 19 | 2005 | 50606.12 |
| 20 | 2004 | 47832.63 |
| 21 | 2003 | 45089.47 |
| 22 | 2002 | 42767.65 |
| 23 | 2001 | 41024.96 |
| 24 | 2000 | 43559.20 |
| 25 | 1999 | 41976.40 |
| 26 | 1998 | 41778.99 |
| 27 | 1997 | 41699.61 |
| 28 | 1996 | 42376.48 |
| 29 | 1995 | 39907.63 |
| 30 | 1994 | 36969.40 |
| 31 | 1993 | 35892.09 |
| 32 | 1992 | 37322.37 |
| 33 | 1991 | 38453.23 |
