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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Phenazone (antipyrin) & its derivs. | $63 | $5,214 | $2 | $3,944 | | $4,744 | $4,409 |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | $2,200 | $28,400 | $10,485 | $15,400 | | $203,080 | $281,201 |
| Hydantoin & its derivs. | | | $49 | $67 | | $45 | |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $3,438 | $4,508 | $4,978 | $14,449 | $5,178 | $5,208 | $13,559 |
| Pyridine & its salts | $26 | | | | $9,782 | | $1,412 |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $1,076 | $398 | $721 | $7,354 | $6,570 | $3,306 | $5,618 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | | $1,347 | $4,191 | $6,221 | $31,410 | $25,056 | $20,435 |
| Melamine | | | | $197 | | | |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $20,286 | $560 | $1,284 | $37,591 | $14,108 | $17,440 | $15,962 |
| 6-Hexanelactam (epsilon-caprolactam) | | | | $107 | | | |
| Lactams (excl. of 2933.71 & 2933.72) | $350,056 | $242,700 | $447,623 | $423,531 | $96,136 | | $3 |
| Total | $377,145 | $283,127 | $469,333 | $508,861 | $163,184 | $258,879 | $342,599 |
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