| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 49942.02 |
| 8 | 2016 | 48741.53 |
| 9 | 2015 | 50055.64 |
| 10 | 2014 | 52135.80 |
| 11 | 2013 | 51313.97 |
| 12 | 2012 | 50855.06 |
| 13 | 2011 | 50110.79 |
| 14 | 2010 | 47690.37 |
| 15 | 2009 | 44426.12 |
| 16 | 2008 | 44874.45 |
| 17 | 2007 | 41252.57 |
| 18 | 2006 | 38463.72 |
| 19 | 2005 | 35378.21 |
| 20 | 2004 | 32720.58 |
| 21 | 2003 | 29727.04 |
| 22 | 2002 | 28147.69 |
| 23 | 2001 | 27227.12 |
| 24 | 2000 | 26487.25 |
| 25 | 1999 | 25559.46 |
| 26 | 1998 | 25197.43 |
| 27 | 1997 | 24151.93 |
| 28 | 1996 | 23706.84 |
| 29 | 1995 | 21168.71 |
| 30 | 1994 | 22405.01 |
| 31 | 1993 | 24290.89 |
| 32 | 1992 | 24907.38 |
| 33 | 1991 | 26933.39 |
