| 时间 | 值 （美元） | 世界排名 |
|---|---|---|
| 2016 | 346 | 118 |
| 2015 | 343 | 146 |
| 2014 | 340 | 150 |
| 2013 | 350 | 154 |
| 2012 | 355 | 154 |
| 2011 | 354 | 154 |
| 2010 | 358 | 174 |
| 2009 | 365 | 153 |
| 2008 | 375 | 153 |
| 2007 | 359 | 150 |
| 2006 | 368 | 145 |
| 2005 | 373 | 138 |
| 2004 | 403 | 133 |
| 2003 | 381 | 134 |
| 2002 | 369 | 133 |
| 2001 | 381 | 128 |
| 2000 | 383 | 127 |
| 1999 | 379 | 118 |
| 1998 | 375 | 118 |
| 1997 | 370 | 118 |
| 1996 | 365 | 117 |
| 1995 | 371 | 116 |
| 1994 | 377 | 107 |
| 1993 | 386 | 103 |
| 1992 | 386 | 100 |
| 1991 | 408 | 96 |
| 1990 | 421 | 93 |
| 1989 | 397 | 80 |
| 1988 | 426 | 79 |
| 1987 | 434 | 79 |
| 1986 | 461 | 77 |