| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 171.9 | 101 |
| 2015 | 159.1 | 115 |
| 2014 | 182.4 | 111 |
| 2013 | 179 | 113 |
| 2012 | 171.9 | 114 |
| 2011 | 170 | 113 |
| 2010 | 149.3 | 111 |
| 2009 | 149.7 | 107 |
| 2008 | 169.6 | 107 |
| 2007 | 138.1 | 109 |
| 2006 | 109.9 | 108 |
| 2005 | 100.5 | 107 |
| 2004 | 90.5 | 106 |
| 2003 | 76.9 | 106 |
| 2002 | 58.9 | 112 |
| 2001 | 53.2 | 113 |
| 2000 | 51.1 | 112 |
| 1999 | 55 | 108 |
| 1998 | 53.6 | 111 |
| 1997 | 49.6 | 113 |
| 1996 | 53.6 | 103 |
| 1995 | 51.9 | 100 |
| 1994 | 41.6 | 103 |
| 1993 | 62 | 89 |
| 1992 | 65.1 | 88 |
| 1991 | 60.6 | 90 |
| 1990 | 61 | 86 |
| 1989 | 52.3 | 77 |
| 1988 | 53.5 | 77 |
| 1987 | 54.3 | 76 |
| 1986 | 45.3 | 77 |