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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $515,356,000 | 842,558,800 | 87,518,697 |
| 2006 | $547,144,000 | 884,583,317 | 92,916,993 |
| 2007 | $522,470,000 | 786,474,311 | 74,828,168 |
| 2008 | $547,601,000 | 779,445,464 | 72,241,093 |
| 2009 | $500,744,000 | 774,158,384 | 54,797,959 |
| 2010 | $528,448,452 | 873,910,700 | 54,656,824 |
| 2011 | $605,997,154 | 948,900,755 | 69,326,179 |
Note: Quantity represents Area in square metres
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