| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 524.2 | 74 |
| 2015 | 532.74 | 77 |
| 2014 | 572.36 | 76 |
| 2013 | 575.31 | 77 |
| 2012 | 512.64 | 78 |
| 2011 | 479.62 | 78 |
| 2010 | 402.84 | 81 |
| 2009 | 316.61 | 87 |
| 2008 | 303.66 | 86 |
| 2007 | 234.11 | 89 |
| 2006 | 195.79 | 89 |
| 2005 | 173.63 | 86 |
| 2004 | 136.86 | 93 |
| 2003 | 120.46 | 89 |
| 2002 | 136.06 | 83 |
| 2001 | 208.99 | 70 |
| 2000 | 228.23 | 64 |
| 1999 | 239.84 | 63 |
| 1998 | 253.86 | 65 |
| 1997 | 239.7 | 65 |
| 1996 | 205.15 | 69 |
| 1995 | 192.98 | 68 |
| 1994 | 174.75 | 65 |
| 1993 | 150.02 | 66 |
| 1992 | 128.78 | 68 |
| 1991 | 112.06 | 72 |
| 1990 | 92.99 | 77 |
| 1989 | 84.39 | 70 |
| 1988 | 82.14 | 70 |
| 1987 | 73.67 | 70 |
| 1986 | 58.8 | 75 |