| 序号 | 时间 (年) |
数据 (美元) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 35676.65 |
| 8 | 2016 | 33731.65 |
| 9 | 2015 | 32264.74 |
| 10 | 2014 | 31974.71 |
| 11 | 2013 | 31656.51 |
| 12 | 2012 | 29904.43 |
| 13 | 2011 | 28398.99 |
| 14 | 2010 | 26587.35 |
| 15 | 2009 | 25363.79 |
| 16 | 2008 | 25665.43 |
| 17 | 2007 | 23819.72 |
| 18 | 2006 | 21623.32 |
| 19 | 2005 | 19283.00 |
| 20 | 2004 | 17192.13 |
| 21 | 2003 | 15769.11 |
| 22 | 2002 | 14628.56 |
| 23 | 2001 | 13370.98 |
| 24 | 2000 | 13018.25 |
| 25 | 1999 | 12675.89 |
| 26 | 1998 | 12350.15 |
| 27 | 1997 | 11271.90 |
| 28 | 1996 | 9780.59 |
| 29 | 1995 | 8026.50 |
| 30 | 1994 | 7563.16 |
| 31 | 1993 | 8133.11 |
| 32 | 1992 | 11694.10 |
| 33 | 1991 | 20946.77 |
