| 时间 | 值 （百万吨公里） | 世界排名 |
|---|---|---|
| 2016 | 1875433 | 80 |
| 2015 | 1782666 | 80 |
| 2014 | 1756070 | 80 |
| 2013 | 1716702 | 78 |
| 2012 | 1872799 | 73 |
| 2011 | 1812519 | 76 |
| 2010 | 1577226 | 79 |
| 2009 | 1679197 | 69 |
| 2008 | 1752603 | 66 |
| 2007 | 1545318 | 71 |
| 2006 | 2148000 | 56 |
| 2005 | 2099000 | 55 |
| 2004 | 1743000 | 67 |
| 2003 | 1582000 | 67 |
| 2002 | 1356000 | 69 |
| 2001 | 1245000 | 74 |
| 2000 | 1072000 | 78 |
| 1999 | 926000 | 79 |
| 1998 | 920000 | 75 |
| 1997 | 767200 | 84 |
| 1996 | 727200 | 83 |
| 1995 | 644.1 | 160 |
| 1994 | 624000 | 92 |
| 1993 | 432200 | 98 |
| 1992 | 215100 | 112 |
| 1991 | 113400 | 121 |