| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 43628.83 |
| 8 | 2016 | 43984.62 |
| 9 | 2015 | 44315.28 |
| 10 | 2014 | 45942.58 |
| 11 | 2013 | 45726.39 |
| 12 | 2012 | 45631.21 |
| 13 | 2011 | 47752.60 |
| 14 | 2010 | 47291.33 |
| 15 | 2009 | 47784.49 |
| 16 | 2008 | 53866.98 |
| 17 | 2007 | 51394.18 |
| 18 | 2006 | 49902.82 |
| 19 | 2005 | 41559.14 |
| 20 | 2004 | 47780.28 |
| 21 | 2003 | 46160.31 |
| 22 | 2002 | 41534.60 |
| 23 | 2001 | 39682.33 |
| 24 | 2000 | 42366.43 |
| 25 | 1999 | 42923.56 |
| 26 | 1998 | 42476.48 |
| 27 | 1997 | 41507.30 |
| 28 | 1996 | 40217.18 |
| 29 | 1995 | 39141.94 |
| 30 | 1994 | 36110.94 |
| 31 | 1993 | 34825.73 |
| 32 | 1992 | 34240.42 |
| 33 | 1991 | 33291.02 |
