| 时间 | 值 （百万吨公里） | 世界排名 |
|---|---|---|
| 2016 | 77134151 | 14 |
| 2015 | 65482307.2 | 15 |
| 2014 | 58289180 | 16 |
| 2013 | 54530105 | 16 |
| 2012 | 39969577 | 17 |
| 2011 | 39911749.6 | 17 |
| 2010 | 36987982 | 17 |
| 2009 | 34168590 | 14 |
| 2008 | 36077655 | 14 |
| 2007 | 36655313 | 14 |
| 2006 | 34842655 | 14 |
| 2005 | 33888328 | 13 |
| 2004 | 34511494 | 13 |
| 2003 | 33372577 | 11 |
| 2002 | 34831814 | 10 |
| 2001 | 33710340 | 10 |
| 2000 | 34331368 | 9 |
| 1999 | 30870200 | 9 |
| 1998 | 27109000 | 11 |
| 1997 | 35505800 | 7 |
| 1996 | 33002700 | 7 |
| 1995 | 29345200 | 7 |
| 1994 | 24932300 | 9 |
| 1993 | 21425900 | 11 |
| 1992 | 19766900 | 11 |
| 1991 | 16908000 | 12 |
| 1990 | 15684500 | 12 |
| 1989 | 13160800 | 11 |
| 1988 | 9826000 | 16 |
| 1987 | 8330900 | 16 |
| 1986 | 7211400 | 17 |