| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 3105.76 |
| 8 | 2016 | 3025.17 |
| 9 | 2015 | 2937.28 |
| 10 | 2014 | 2796.75 |
| 11 | 2013 | 2749.63 |
| 12 | 2012 | 4302.09 |
| 13 | 2011 | 4095.77 |
| 14 | 2010 | 3975.48 |
| 15 | 2009 | 3865.60 |
| 16 | 2008 | 3629.35 |
| 17 | 2007 | 3628.96 |
| 18 | 2006 | 3529.56 |
| 19 | 2005 | 3437.33 |
| 20 | 2004 | 3485.43 |
| 21 | 2003 | 3361.93 |
| 22 | 2002 | 3644.84 |
| 23 | 2001 | 3602.12 |
| 24 | 2000 | 3531.97 |
| 25 | 1999 | 3732.55 |
| 26 | 1998 | 3709.64 |
| 27 | 1997 | 3647.23 |
| 28 | 1996 | 3566.89 |
| 29 | 1995 | 3815.62 |
| 30 | 1994 | 3656.95 |
| 31 | 1993 | 3592.98 |
| 32 | 1992 | 3688.01 |
| 33 | 1991 | 4050.72 |
