| 时间 | 值 （百万吨公里） | 世界排名 |
|---|---|---|
| 2016 | 60455199.2 | 18 |
| 2015 | 55441601.6 | 18 |
| 2014 | 46546612.5 | 19 |
| 2013 | 43029150.6 | 19 |
| 2012 | 36392469.4 | 19 |
| 2011 | 31940492 | 20 |
| 2010 | 28780723 | 21 |
| 2009 | 19618735 | 22 |
| 2008 | 19993134 | 22 |
| 2007 | 21191723 | 21 |
| 2006 | 20102408 | 20 |
| 2005 | 18902629 | 21 |
| 2004 | 20342582 | 19 |
| 2003 | 16622502 | 19 |
| 2002 | 18111892 | 17 |
| 2001 | 17662418 | 16 |
| 2000 | 17392091 | 16 |
| 1999 | 15950500 | 18 |
| 1998 | 15015400 | 17 |
| 1997 | 14235800 | 18 |
| 1996 | 14078300 | 18 |
| 1995 | 12771400 | 19 |
| 1994 | 11404700 | 20 |
| 1993 | 10196900 | 20 |
| 1992 | 8546800 | 22 |
| 1991 | 7708600 | 24 |
| 1990 | 8201400 | 22 |
| 1989 | 7364500 | 23 |
| 1988 | 6235900 | 24 |
| 1987 | 5179600 | 28 |
| 1986 | 4370000 | 30 |