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| Commodity | 2005 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Phenazone (antipyrin) & its derivs. | | | | $3,717 | | $44 |
| Hydantoin & its derivs. | | | | | $1,208 | |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $3,032 | $1 | | $1,380 | $2,823 | $787 |
| Pyridine & its salts | $3,916 | | $118,667 | $28,650 | | |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | | $8,000 | $11,515 | | $25,221 | $29,300 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $630 | | | | | |
| Melamine | | $9,922 | | | | $2 |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | | | | $27,759 | | |
| Lactams (excl. of 2933.71 & 2933.72) | | | | $42 | | $88,500 |
| Total | $7,578 | $17,923 | $130,182 | $61,548 | $29,252 | $118,633 |
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