| 序号 | 时间 (年) |
数据 (亿美元) |
|---|---|---|
| 1 | 2024 | |
| 2 | 2023 | |
| 3 | 2022 | |
| 4 | 2021 | |
| 5 | 2020 | |
| 6 | 2019 | |
| 7 | 2018 | 0.72 |
| 8 | 2017 | 0.31 |
| 9 | 2016 | 0.36 |
| 10 | 2015 | 1.67 |
| 11 | 2014 | 0.66 |
| 12 | 2013 | 1.29 |
| 13 | 2012 | 1.46 |
| 14 | 2011 | 1.87 |
| 15 | 2010 | 0.45 |
| 16 | 2009 | 0.30 |
| 17 | 2008 | 0.39 |
| 18 | 2007 | 0.45 |
| 19 | 2006 | 0.32 |
| 20 | 2005 | 0.53 |
| 21 | 2004 | 0.64 |
| 22 | 2003 | 0.29 |
| 23 | 2002 | 0.21 |
| 24 | 2001 | 0.10 |
| 25 | 2000 | 0.06 |
| 26 | 1999 | 0.04 |
| 27 | 1998 | 0.03 |
| 28 | 1997 | 0.10 |
| 29 | 1996 | 0.05 |
| 30 | 1995 | 0.22 |
| 31 | 1994 | 0.48 |
