| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 65070.40 |
| 8 | 2016 | 64610.98 |
| 9 | 2015 | 58632.24 |
| 10 | 2014 | 57766.25 |
| 11 | 2013 | 60371.51 |
| 12 | 2012 | 59510.64 |
| 13 | 2011 | 54699.64 |
| 14 | 2010 | 52692.86 |
| 15 | 2009 | 51234.10 |
| 16 | 2008 | 51485.46 |
| 17 | 2007 | 48661.29 |
| 18 | 2006 | 47404.95 |
| 19 | 2005 | 45407.88 |
| 20 | 2004 | 46180.92 |
| 21 | 2003 | 31124.68 |
| 22 | 2002 | 50589.02 |
| 23 | 2001 | 56813.97 |
| 24 | 2000 | 57599.03 |
| 25 | 1999 | 50981.13 |
| 26 | 1998 | 44889.29 |
| 27 | 1997 | 34469.60 |
| 28 | 1996 | 29380.35 |
| 29 | 1995 | 27372.64 |
| 30 | 1994 | 27705.45 |
| 31 | 1993 | 28108.57 |
| 32 | 1992 | 22711.58 |
| 33 | 1991 | 17668.25 |
