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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $459,454,985 | 676,009,205 | 676,009,205 |
| 2006 | $1,578,950,735 | 2,360,467,231 | 2,360,467,231 |
| 2007 | $2,287,648,215 | 3,136,267,014 | 3,136,267,014 |
| 2008 | $2,612,308,770 | 2,656,931,415 | 2,656,931,415 |
| 2009 | $845,134,026 | 1,186,457,171 | 1,186,457,171 |
| 2010 | $2,433,799,064 | 3,172,815,011 | 3,172,815,011 |
| 2011 | $3,738,051,618 | 4,344,121,353 | 4,344,121,353 |
Note: Quantity represents Weight in kilograms
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