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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,001,959,263 | 864,417,596 | 864,417,596 |
| 2006 | $1,017,452,573 | 857,192,022 | 857,192,022 |
| 2007 | $1,132,158,991 | 882,192,356 | 882,192,356 |
| 2008 | $1,166,630,354 | 878,115,243 | 878,115,243 |
| 2009 | $980,722,103 | 920,777,587 | 920,777,587 |
| 2010 | $1,157,922,576 | 904,587,910 | 904,587,910 |
| 2011 | $1,513,946,089 | 901,671,896 | 901,671,896 |
Note: Quantity represents Weight in kilograms
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