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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $749,854,074 | 321,913,283 | 321,913,283 |
| 2006 | $692,644,137 | 299,030,312 | 299,030,312 |
| 2007 | $704,824,709 | 297,410,696 | 297,410,696 |
| 2008 | $1,050,788,544 | 273,027,903 | 273,027,903 |
| 2009 | $676,075,801 | 214,731,104 | 214,731,104 |
| 2010 | $847,067,271 | 246,248,846 | 246,248,846 |
| 2011 | $905,950,925 | 259,403,661 | 259,403,661 |
Note: Quantity represents Weight in kilograms
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