| 时间 | 值 （美元） | 世界排名 |
|---|---|---|
| 2016 | 10373 | 31 |
| 2015 | 10096 | 40 |
| 2014 | 9817 | 40 |
| 2013 | 9654 | 41 |
| 2012 | 9608 | 42 |
| 2011 | 9739 | 42 |
| 2010 | 9733 | 45 |
| 2009 | 9664 | 40 |
| 2008 | 9784 | 41 |
| 2007 | 9587 | 42 |
| 2006 | 9260 | 41 |
| 2005 | 8946 | 40 |
| 2004 | 8677 | 41 |
| 2003 | 8388 | 40 |
| 2002 | 8005 | 39 |
| 2001 | 7763 | 36 |
| 2000 | 7522 | 35 |
| 1999 | 7382 | 35 |
| 1998 | 7165 | 33 |
| 1997 | 7205 | 34 |
| 1996 | 6997 | 35 |
| 1995 | 6505 | 36 |
| 1994 | 6213 | 35 |
| 1993 | 5965 | 35 |
| 1992 | 5898 | 34 |
| 1991 | 5426 | 35 |
| 1990 | 6889 | 32 |