| 时间 | 值 （亿元） | 世界排名 |
|---|---|---|
| 2010 | 1341 | 101 |
| 2009 | 1315.3 | 100 |
| 2008 | 1447.9 | 96 |
| 2007 | 1419.9 | 95 |
| 2006 | 1286.9 | 92 |
| 2005 | 1100.3 | 92 |
| 2004 | 876.8 | 93 |
| 2003 | 27.6 | 139 |
| 2002 | 24.5 | 139 |
| 2001 | 21.6 | 139 |
| 2000 | 17.2 | 141 |
| 1999 | 13.2 | 141 |
| 1998 | 10.7 | 141 |
| 1997 | 10.1 | 140 |
| 1996 | 6.8 | 140 |
| 1995 | 4.5 | 143 |
| 1994 | 3.5 | 139 |
| 1993 | 2.7 | 137 |
| 1992 | 2 | 128 |
| 1991 | 1.3 | 125 |