| 序号 | 时间 (年) |
数据 (亿美元) |
|---|---|---|
| 1 | 2022 | |
| 2 | 2021 | |
| 3 | 2020 | |
| 4 | 2019 | |
| 5 | 2018 | |
| 6 | 2017 | |
| 7 | 2016 | 2.43 |
| 8 | 2015 | 3.03 |
| 9 | 2014 | 20.92 |
| 10 | 2013 | 2.24 |
| 11 | 2012 | 5.27 |
| 12 | 2011 | 5.59 |
| 13 | 2010 | 7.48 |
| 14 | 2009 | 6.86 |
| 15 | 2008 | 21.50 |
| 16 | 2007 | 25.97 |
| 17 | 2006 | 22.68 |
| 18 | 2005 | 24.49 |
| 19 | 2004 | 22.79 |
| 20 | 2003 | 17.48 |
| 21 | 2002 | 15.68 |
| 22 | 2001 | 14.68 |
| 23 | 2000 | 15.24 |
| 24 | 1999 | 11.53 |
| 25 | 1997 | 12.16 |
| 26 | 1995 | 11.72 |
| 27 | 1994 | 11.99 |
| 28 | 1990 | 7.39 |
