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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,336,704,069 | 631,144 | 631,144 |
| 2006 | $3,109,566,948 | 419,897 | 419,897 |
| 2007 | $3,648,164,696 | 340,867 | 340,867 |
| 2008 | $3,929,666,711 | 261,884 | 261,884 |
| 2009 | $3,336,430,119 | 160,510 | 160,510 |
| 2010 | $3,821,357,330 | 149,096 | 149,096 |
| 2011 | $4,488,044,067 | 172,436 | 172,436 |
Note: Quantity represents Weight in kilograms
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