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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Phenazone (antipyrin) & its derivs. | $30,052 | | $15,655 | $76,477 | $99 | $9,592 | $5,301 |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | $185,536 | $192,424 | $62,169 | $81,610 | $89,425 | $145,969 | $114,233 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $503 | $4,385 | $29,490 | $7,853 | $11,326 | $52,559 | $115,418 |
| Pyridine & its salts | | | | $57,263 | | | |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $8,715 | $17,098 | $50,072 | $18,741 | $35,108 | $1,352 | $7,462 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $4,648 | $3,644 | $33,593 | $39,377 | $18,925 | $43,877 | $21,440 |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $9,298 | | | | | | |
| 6-Hexanelactam (epsilon-caprolactam) | | $1,681 | | $5,591 | $2,090 | | $10,749 |
| Lactams (excl. of 2933.71 & 2933.72) | | | | $3,103 | $5,106 | $4,923 | $16,504 |
| Total | $238,752 | $219,232 | $190,979 | $290,015 | $162,079 | $258,272 | $291,107 |
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