| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 51957.71 |
| 8 | 2016 | 51924.47 |
| 9 | 2015 | 52086.10 |
| 10 | 2014 | 52037.59 |
| 11 | 2013 | 51326.72 |
| 12 | 2012 | 51723.00 |
| 13 | 2011 | 51684.46 |
| 14 | 2010 | 51134.85 |
| 15 | 2009 | 49555.64 |
| 16 | 2008 | 52958.58 |
| 17 | 2007 | 53086.51 |
| 18 | 2006 | 53050.07 |
| 19 | 2005 | 52301.97 |
| 20 | 2004 | 53178.49 |
| 21 | 2003 | 52688.27 |
| 22 | 2002 | 53259.61 |
| 23 | 2001 | 53899.87 |
| 24 | 2000 | 54766.88 |
| 25 | 1999 | 53191.38 |
| 26 | 1998 | 52919.90 |
| 27 | 1997 | 51052.34 |
| 28 | 1996 | 50527.11 |
| 29 | 1995 | 49666.20 |
| 30 | 1994 | 52703.63 |
| 31 | 1993 | 51290.20 |
| 32 | 1992 | 51674.69 |
| 33 | 1991 | 51748.26 |
