| 时间 | 值 （百万吨公里） | 世界排名 |
|---|---|---|
| 2016 | 31209097 | 28 |
| 2015 | 25263224 | 30 |
| 2014 | 21425066 | 30 |
| 2013 | 18737348 | 30 |
| 2012 | 17187171 | 31 |
| 2011 | 14568106 | 32 |
| 2010 | 12391268 | 35 |
| 2009 | 10211229 | 33 |
| 2008 | 9702479 | 32 |
| 2007 | 8879109 | 33 |
| 2006 | 7070851 | 35 |
| 2005 | 6041040 | 36 |
| 2004 | 4453071 | 46 |
| 2003 | 3184104 | 49 |
| 2002 | 3570521 | 46 |
| 2001 | 2778116 | 49 |
| 2000 | 2672972 | 49 |
| 1999 | 2325200 | 49 |
| 1998 | 1207000 | 65 |
| 1997 | 1164600 | 69 |
| 1996 | 1200300 | 65 |
| 1995 | 1072500 | 69 |
| 1994 | 1150600 | 64 |
| 1993 | 1080000 | 64 |
| 1992 | 981100 | 65 |
| 1991 | 875500 | 63 |
| 1990 | 770900 | 68 |
| 1989 | 752800 | 68 |
| 1988 | 698400 | 72 |
| 1987 | 621500 | 70 |
| 1986 | 647400 | 67 |