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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $255,963,905 | 3,766,624,144 | 3,766,624,144 |
| 2006 | $263,807,259 | 3,924,798,880 | 3,924,798,880 |
| 2007 | $325,066,882 | 4,089,288,160 | 4,089,288,160 |
| 2008 | $785,664,734 | 4,074,411,072 | 4,074,411,072 |
| 2009 | $406,257,314 | 3,043,024,128 | 3,043,024,128 |
| 2010 | $437,497,479 | 3,462,700,212 | 3,462,700,212 |
| 2011 | $854,582,261 | 5,113,484,130 | 5,113,484,130 |
Note: Quantity represents Weight in kilograms
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