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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $449,067,091 | 359,719,131 | 359,719,131 |
| 2006 | $494,613,623 | 370,704,697 | 370,704,697 |
| 2007 | $372,747,843 | 318,312,288 | 318,312,288 |
| 2008 | $305,180,255 | 230,225,806 | 230,225,806 |
| 2009 | $517,237,343 | 261,662,309 | 261,662,309 |
| 2010 | $875,919,610 | 330,000,136 | 330,000,136 |
| 2011 | $1,520,386,968 | 399,674,967 | 399,674,967 |
Note: Quantity represents Weight in kilograms
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