| 时间 | 值 （百万吨公里） | 世界排名 |
|---|---|---|
| 2016 | 119577835 | 6 |
| 2015 | 98927860 | 8 |
| 2014 | 82718882.9 | 10 |
| 2013 | 75589071 | 9 |
| 2012 | 72151828.9 | 9 |
| 2011 | 73996912 | 8 |
| 2010 | 64374253.8 | 8 |
| 2009 | 54446373 | 9 |
| 2008 | 49877935 | 12 |
| 2007 | 51897450 | 10 |
| 2006 | 40288794 | 12 |
| 2005 | 27879461 | 14 |
| 2004 | 23934074 | 17 |
| 2003 | 19455085 | 17 |
| 2002 | 17633019 | 18 |
| 2001 | 16862737 | 18 |
| 2000 | 17299483 | 17 |
| 1999 | 16005400 | 17 |
| 1998 | 16521000 | 15 |
| 1997 | 16039800 | 16 |
| 1996 | 13394600 | 19 |
| 1995 | 14260600 | 18 |
| 1994 | 11518400 | 19 |
| 1993 | 9441600 | 22 |
| 1992 | 11127100 | 18 |
| 1991 | 10717400 | 16 |
| 1990 | 10862200 | 15 |
| 1989 | 12740100 | 12 |
| 1988 | 12863100 | 12 |
| 1987 | 12668600 | 12 |
| 1986 | 11785200 | 12 |