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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Phenazone (antipyrin) & its derivs. | | | | $7,625 | | |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | $49,200 | $359,636 | $189 | $217 | | $344,126 |
| Hydantoin & its derivs. | | $446,380 | | | | |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $1,045 | $2,950 | $30,210 | | | $14,000 |
| Pyridine & its salts | $909,340 | $543,632 | | | | |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $4,667,804 | $5,606,753 | $3,863,579 | $5,383,297 | $339,720 | $4,800 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $481,745 | $236,986 | $257,882 | $354,629 | $15,000 | $1,500 |
| Melamine | $14,897 | | $300 | | $3,004 | $47,839 |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $25,478 | $43,374 | | | | $8,270 |
| Total | $6,149,509 | $7,239,711 | $4,152,160 | $5,745,768 | $357,724 | $420,535 |
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