| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 3908.34 |
| 8 | 2016 | 3895.12 |
| 9 | 2015 | 4021.93 |
| 10 | 2014 | 4088.10 |
| 11 | 2013 | 4139.65 |
| 12 | 2012 | 3885.97 |
| 13 | 2011 | 3746.99 |
| 14 | 2010 | 3627.65 |
| 15 | 2009 | 3516.25 |
| 16 | 2008 | 3444.49 |
| 17 | 2007 | 3345.66 |
| 18 | 2006 | 3203.88 |
| 19 | 2005 | 3133.69 |
| 20 | 2004 | 3105.85 |
| 21 | 2003 | 3055.67 |
| 22 | 2002 | 4387.23 |
| 23 | 2001 | 4330.61 |
| 24 | 2000 | 4327.94 |
| 25 | 1999 | 3488.48 |
| 26 | 1998 | 3031.49 |
| 27 | 1997 | 2585.65 |
| 28 | 1996 | 1362.25 |
| 29 | 1995 | 1256.59 |
| 30 | 1994 | 1330.55 |
| 31 | 1993 | 1700.53 |
| 32 | 1992 | 2646.81 |
| 33 | 1991 | 4326.18 |
