| Years | Trade Value in 1000 USD | Revenue Effect in 1000 USD |
| 2010 | 5,115,310 | 0.00 |
| 2009 | 5,026,590 | 0.00 |
| 2008 | 5,113,340 | 0.00 |
| 2007 | 4,956,870 | 0.00 |
| 2006 | 4,080,150 | 0.00 |