| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 578.4 | 64 |
| 2015 | 556.5 | 75 |
| 2014 | 530.2 | 79 |
| 2013 | 485.1 | 86 |
| 2012 | 435.7 | 87 |
| 2011 | 380.9 | 88 |
| 2010 | 316 | 91 |
| 2009 | 265.8 | 93 |
| 2008 | 274.3 | 93 |
| 2007 | 223.9 | 94 |
| 2006 | 191.5 | 92 |
| 2005 | 174.7 | 90 |
| 2004 | 162.3 | 87 |
| 2003 | 145.2 | 83 |
| 2002 | 138.5 | 82 |
| 2001 | 132.3 | 81 |
| 2000 | 135.3 | 79 |
| 1999 | 137 | 80 |
| 1998 | 134.2 | 81 |
| 1997 | 118.9 | 81 |
| 1996 | 112 | 80 |
| 1995 | 108.4 | 81 |
| 1994 | 104.4 | 76 |
| 1993 | 98 | 79 |
| 1992 | 90.2 | 76 |
| 1991 | 78.9 | 80 |
| 1990 | 68.7 | 83 |
| 1989 | 62.2 | 73 |
| 1988 | 57.9 | 75 |
| 1987 | 70.9 | 68 |
| 1986 | 70.1 | 67 |