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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $369,448,949 | 1,249,440,538 | 85,026,023 |
| 2006 | $369,992,006 | 1,189,548,340 | 80,025,942 |
| 2007 | $430,580,598 | 1,263,042,738 | 84,587,796 |
| 2008 | $463,496,092 | 1,189,111,249 | 79,325,536 |
| 2009 | $337,738,699 | 875,402,186 | 58,167,658 |
| 2010 | $394,072,721 | 1,036,724,842 | 68,363,542 |
| 2011 | $439,204,830 | 1,090,907,671 | 71,483,493 |
Note: Quantity represents Area in square metres
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