| 时间 | 值 （百万吨公里） | 世界排名 |
|---|---|---|
| 2016 | 15081755.3 | 36 |
| 2015 | 13877661.5 | 38 |
| 2014 | 12284677 | 38 |
| 2013 | 12255937.8 | 37 |
| 2012 | 10074855.6 | 39 |
| 2011 | 8609620.4 | 41 |
| 2010 | 7106025.3 | 44 |
| 2009 | 5843195 | 41 |
| 2008 | 6184410 | 39 |
| 2007 | 5273188 | 42 |
| 2006 | 4217880 | 44 |
| 2005 | 4332223 | 44 |
| 2004 | 3225128 | 52 |
| 2003 | 2226329 | 54 |
| 2002 | 2085823 | 55 |
| 2001 | 2248991 | 53 |
| 2000 | 1595268 | 62 |
| 1999 | 1900000 | 55 |
| 1998 | 2774500 | 48 |
| 1997 | 2724500 | 47 |
| 1996 | 2327500 | 46 |
| 1995 | 2508300 | 46 |
| 1994 | 1894900 | 49 |
| 1993 | 1362400 | 52 |
| 1992 | 1217600 | 56 |
| 1991 | 1490600 | 46 |
| 1990 | 1816200 | 44 |
| 1989 | 1854300 | 45 |
| 1988 | 2737100 | 40 |
| 1987 | 3009000 | 37 |
| 1986 | 2152900 | 40 |