| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 119.6 | 50 |
| 2015 | 117.6 | 60 |
| 2014 | 117.9 | 61 |
| 2013 | 118.8 | 62 |
| 2012 | 118.5 | 61 |
| 2011 | 119.7 | 61 |
| 2010 | 120.1 | 62 |
| 2009 | 122.1 | 59 |
| 2008 | 119.5 | 58 |
| 2007 | 120.4 | 58 |
| 2006 | 113 | 59 |
| 2005 | 107.3 | 59 |
| 2004 | 104.2 | 57 |
| 2003 | 100.9 | 56 |
| 2002 | 98.9 | 56 |
| 2001 | 93.3 | 57 |
| 2000 | 97.4 | 54 |
| 1999 | 100.8 | 53 |
| 1998 | 98.4 | 53 |
| 1997 | 94.8 | 53 |
| 1996 | 91.9 | 54 |
| 1995 | 94.6 | 52 |