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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Phenazone (antipyrin) & its derivs. | | | | $18 | $482 | $2,004 | |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $1,259 | $26 | | | $242 | $180 | |
| Pyridine & its salts | | | | | $1,451 | $138 | |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | | | $114,230 | | $57,623 | $4,983 | |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $662 | $436 | $7 | $50 | $547 | $2,244 | $7,608 |
| Melamine | | | | | | | $105 |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $3,632 | $5,822 | $6,482 | $6,255 | $5,735 | $7,643 | $56,697 |
| 6-Hexanelactam (epsilon-caprolactam) | $36,800 | $38,158 | | | | | |
| Lactams (excl. of 2933.71 & 2933.72) | | | | | $550 | | |
| Total | $42,353 | $44,442 | $120,719 | $6,323 | $66,630 | $17,192 | $64,410 |
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