| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 198.02 | 105 |
| 2015 | 195.6 | 108 |
| 2014 | 233.08 | 105 |
| 2013 | 240.55 | 107 |
| 2012 | 250.12 | 103 |
| 2011 | 274.27 | 98 |
| 2010 | 255.62 | 96 |
| 2009 | 259.43 | 93 |
| 2008 | 278.39 | 91 |
| 2007 | 240.77 | 88 |
| 2006 | 204.04 | 88 |
| 2005 | 187.03 | 85 |
| 2004 | 174.22 | 84 |
| 2003 | 145.77 | 85 |
| 2002 | 116.18 | 88 |
| 2001 | 105.67 | 88 |
| 2000 | 101.83 | 89 |
| 1999 | 106.14 | 88 |
| 1998 | 103.54 | 87 |
| 1997 | 95.94 | 90 |
| 1996 | 99 | 84 |
| 1995 | 98.27 | 83 |
| 1994 | 74.26 | 84 |
| 1993 | 65.9 | 87 |
| 1992 | 69.12 | 86 |
| 1991 | 57.7 | 92 |
| 1990 | 55.91 | 95 |
| 1989 | 45.63 | 86 |
| 1988 | 42.79 | 87 |
| 1987 | 37.05 | 90 |
| 1986 | 30.91 | 90 |