| 时间 | 值 （美元） | 世界排名 |
|---|---|---|
| 2016 | 8333 | 67 |
| 2015 | 10347 | 66 |
| 2014 | 19003 | 49 |
| 2013 | 20247 | 50 |
| 2012 | 21558 | 48 |
| 2011 | 21452 | 51 |
| 2010 | 17136 | 53 |
| 2009 | 16530 | 52 |
| 2008 | 22742 | 48 |
| 2007 | 15762 | 59 |
| 2006 | 12732 | 60 |
| 2005 | 10851 | 62 |
| 2004 | 6085 | 71 |
| 2003 | 3577 | 87 |
| 2002 | 2711 | 92 |
| 2001 | 2284 | 93 |
| 2000 | 1703 | 107 |
| 1999 | 1053 | 129 |
| 1998 | 654 | 144 |
| 1997 | 812 | 134 |
| 1996 | 444 | 158 |
| 1995 | 281 | 173 |
| 1994 | 207 | 169 |
| 1993 | 289 | 160 |
| 1992 | 296 | 160 |
| 1991 | 252 | 168 |
| 1990 | 263 | 167 |
| 1989 | 213 | 157 |
| 1988 | 250 | 154 |
| 1987 | 239 | 154 |
| 1986 | 203 | 153 |