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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $636,619,518 | 26,794,432 | 26,794,432 |
| 2006 | $789,788,918 | 33,241,119 | 33,241,119 |
| 2007 | $1,010,710,471 | 35,279,093 | 35,279,093 |
| 2008 | $1,123,089,987 | 37,495,839 | 37,495,839 |
| 2009 | $1,000,333,000 | 29,739,029 | 29,739,029 |
| 2010 | $1,167,028,473 | 190,370,449 | 190,370,449 |
| 2011 | $1,343,683,960 | 203,340,971 | 203,340,971 |
Note: Quantity represents Weight in kilograms
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