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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $547,943,256 | 615,882,957 | 615,882,957 |
| 2006 | $641,614,392 | 645,579,038 | 645,579,038 |
| 2007 | $770,702,208 | 677,717,436 | 677,717,436 |
| 2008 | $696,188,432 | 561,000,202 | 561,000,202 |
| 2009 | $576,359,824 | 604,977,068 | 604,977,068 |
| 2010 | $789,924,047 | 756,478,417 | 756,478,417 |
| 2011 | $833,998,900 | 698,284,734 | 698,284,734 |
Note: Quantity represents Weight in kilograms
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