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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Phenazone (antipyrin) & its derivs. | $59,785 | $2,717 | | $477 | $30,349 | $7,845 | $24,446 |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | | $15,885 | $9,822 | $11,116 | $10,335 | $12,467 | $12,677 |
| Hydantoin & its derivs. | $1,039 | | $1,069 | $477 | $1,024 | | |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | | | | | $5,141 | $12,918 | |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $5,806 | $11,527 | $8,203 | $5,691 | $6,342 | $32,377 | $19,935 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | | $40,410 | $10,858 | $33,635 | $27,509 | $71,734 | $79,106 |
| Melamine | | | | | | | $11,597 |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $8,831 | $61,565 | $354,285 | $351,691 | $155,380 | $35,512 | $351,547 |
| Lactams (excl. of 2933.71 & 2933.72) | | $128,541 | | $226 | | $12,810 | |
| Total | $75,461 | $260,645 | $384,237 | $403,313 | $236,080 | $185,663 | $499,308 |
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