| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 551.88 | 73 |
| 2015 | 521.32 | 79 |
| 2014 | 491.66 | 83 |
| 2013 | 448.56 | 89 |
| 2012 | 399.55 | 90 |
| 2011 | 343.74 | 90 |
| 2010 | 289.17 | 92 |
| 2009 | 265.94 | 90 |
| 2008 | 245.22 | 96 |
| 2007 | 209.58 | 97 |
| 2006 | 181.42 | 95 |
| 2005 | 163.74 | 94 |
| 2004 | 150.13 | 89 |
| 2003 | 136.94 | 87 |
| 2002 | 129.94 | 85 |
| 2001 | 125.02 | 82 |
| 2000 | 123.04 | 84 |
| 1999 | 121.3 | 85 |
| 1998 | 115.75 | 84 |
| 1997 | 106.77 | 86 |
| 1996 | 98.7 | 85 |
| 1995 | 95.74 | 84 |
| 1994 | 93.65 | 79 |
| 1993 | 87.83 | 82 |
| 1992 | 80.42 | 81 |
| 1991 | 70.75 | 85 |
| 1990 | 64.34 | 89 |
| 1989 | 59.18 | 79 |
| 1988 | 59.03 | 80 |
| 1987 | 68.28 | 72 |
| 1986 | 67.98 | 69 |