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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $361,503,617 | 1,570,597,791 | 1,570,597,791 |
| 2006 | $326,657,052 | 1,367,284,210 | 1,367,284,210 |
| 2007 | $1,474,595,745 | 5,247,585,611 | 5,247,585,611 |
| 2008 | $1,632,087,921 | 4,359,578,766 | 4,359,578,766 |
| 2009 | $895,139,874 | 3,352,928,705 | 3,352,928,705 |
| 2010 | $2,095,973,101 | 7,027,230,388 | 7,027,230,388 |
| 2011 | $1,549,734,597 | 3,554,713,530 | 3,554,713,530 |
Note: Quantity represents Weight in kilograms
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