| 时间 | 值 （百万吨公里） | 世界排名 |
|---|---|---|
| 2016 | 6025474.7 | 51 |
| 2015 | 7086071.9 | 46 |
| 2014 | 7888722.4 | 45 |
| 2013 | 6866780.6 | 46 |
| 2012 | 7738509.6 | 45 |
| 2011 | 7728281.3 | 44 |
| 2010 | 6428163 | 46 |
| 2009 | 5121009 | 45 |
| 2008 | 5766973 | 42 |
| 2007 | 5495292 | 40 |
| 2006 | 5225573 | 40 |
| 2005 | 5043028 | 40 |
| 2004 | 4943887 | 44 |
| 2003 | 3889929 | 44 |
| 2002 | 6369455 | 38 |
| 2001 | 9452434 | 31 |
| 2000 | 4295000 | 45 |
| 1999 | 4690000 | 43 |
| 1998 | 3736600 | 44 |
| 1997 | 4020300 | 44 |
| 1996 | 4487400 | 40 |
| 1995 | 4445000 | 39 |
| 1994 | 5266800 | 35 |
| 1993 | 6813900 | 26 |
| 1992 | 7149400 | 25 |
| 1991 | 6795200 | 25 |
| 1990 | 6846800 | 24 |
| 1989 | 10098800 | 16 |
| 1988 | 8383800 | 18 |
| 1987 | 6454100 | 23 |
| 1986 | 5790900 | 23 |