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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $317,593,241 | 4,855,034 | 961,580,553 |
| 2006 | $323,611,287 | 4,947,032 | 946,087,621 |
| 2007 | $328,893,194 | 5,087,819 | 991,990,650 |
| 2008 | $334,477,368 | 0 | 0 |
| 2009 | $334,877,369 | 0 | 672,293,448 |
| 2010 | $290,494,237 | 0 | 649,563,282 |
| 2011 | $225,416,282 | 0 | 567,646,623 |
Note: Quantity represents Length in metres
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