| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 101.79 | 129 |
| 2015 | 121.62 | 125 |
| 2014 | 214.62 | 106 |
| 2013 | 219.43 | 108 |
| 2012 | 223.9 | 108 |
| 2011 | 213.29 | 108 |
| 2010 | 162.99 | 110 |
| 2009 | 150.28 | 110 |
| 2008 | 197.5 | 103 |
| 2007 | 130.72 | 111 |
| 2006 | 100.87 | 117 |
| 2005 | 82.17 | 118 |
| 2004 | 44.11 | 138 |
| 2003 | 24.85 | 150 |
| 2002 | 18.07 | 153 |
| 2001 | 14.61 | 157 |
| 2000 | 10.46 | 163 |
| 1999 | 6.21 | 176 |
| 1998 | 3.71 | 182 |
| 1997 | 4.42 | 177 |
| 1996 | 2.32 | 186 |
| 1995 | 1.42 | 188 |
| 1994 | 1.01 | 182 |
| 1993 | 1.36 | 178 |
| 1992 | 1.35 | 176 |
| 1991 | 1.11 | 176 |
| 1990 | 1.12 | 176 |
| 1989 | 0.88 | 162 |
| 1988 | 1.01 | 161 |
| 1987 | 0.93 | 158 |
| 1986 | 0.76 | 154 |