| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 448.03 | 80 |
| 2015 | 454.15 | 84 |
| 2014 | 553.48 | 80 |
| 2013 | 515.52 | 81 |
| 2012 | 430.32 | 86 |
| 2011 | 367.1 | 88 |
| 2010 | 281.24 | 93 |
| 2009 | 214.76 | 99 |
| 2008 | 209.17 | 102 |
| 2007 | 183.4 | 103 |
| 2006 | 147.9 | 103 |
| 2005 | 120.92 | 102 |
| 2004 | 105.86 | 100 |
| 2003 | 81.95 | 104 |
| 2002 | 73.23 | 103 |
| 2001 | 68.11 | 104 |
| 2000 | 67.2 | 104 |
| 1999 | 64.91 | 103 |
| 1998 | 67.42 | 99 |
| 1997 | 72.11 | 99 |
| 1996 | 71.23 | 96 |
| 1995 | 69.96 | 94 |
| 1994 | 62.66 | 90 |
| 1993 | 56.26 | 94 |
| 1992 | 48.79 | 99 |
| 1991 | 37.35 | 107 |
| 1990 | 32.21 | 109 |
| 1989 | 26.83 | 104 |
| 1988 | 22.69 | 111 |
| 1987 | 19.41 | 113 |
| 1986 | 15.17 | 111 |