| 时间 | 值 （百万吨公里） | 世界排名 |
|---|---|---|
| 2016 | 2383631 | 75 |
| 2015 | 2486673 | 72 |
| 2014 | 2545935 | 71 |
| 2013 | 2614085 | 69 |
| 2012 | 2593509 | 67 |
| 2011 | 2275947 | 69 |
| 2010 | 2114050 | 67 |
| 2009 | 1850056 | 67 |
| 2008 | 2033933 | 63 |
| 2007 | 1940378 | 63 |
| 2006 | 1665190 | 66 |
| 2005 | 1639276 | 66 |
| 2004 | 1588049 | 71 |
| 2003 | 1465798 | 69 |
| 2002 | 1451004 | 66 |
| 2001 | 2256380 | 52 |
| 2000 | 1744510 | 61 |
| 1999 | 1657600 | 60 |
| 1998 | 1560200 | 60 |
| 1997 | 1566200 | 58 |
| 1996 | 1566200 | 55 |
| 1995 | 2217300 | 48 |
| 1994 | 2217300 | 46 |
| 1993 | 2217300 | 46 |
| 1992 | 4032500 | 40 |