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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,831,223,337 | 4,283,330,341 | 255,296,439 |
| 2006 | $3,008,596,527 | 4,281,095,793 | 460,743,114 |
| 2007 | $3,277,831,241 | 1,937,525,899 | 246,461,902 |
| 2008 | $3,186,198,453 | 3,597,526,002 | 219,360,220 |
| 2009 | $2,416,924,711 | 2,884,860,144 | 176,360,670 |
| 2010 | $2,421,981,393 | 2,962,301,701 | 182,950,742 |
| 2011 | $2,596,263,101 | 2,990,826,176 | 171,845,420 |
Note: Quantity represents Area in square metres
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