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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 |
| Phenazone (antipyrin) & its derivs. | $1,007 | $16,403 | $27,400 | $34,975 | $21,381 |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | $189,092 | $1,349,730 | $706,283 | $412,689 | $587,120 |
| Hydantoin & its derivs. | $4,024 | $16,165 | $1,731 | $3,569 | $1,652 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $1,955 | $54,171 | $16,416 | $19,257 | $86,316 |
| Pyridine & its salts | $127 | $5,104 | $27,315 | $42,929 | $3,380 |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $8,877 | $9,331 | $344,817 | $3,895 | $252,235 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $9,063 | $4,675 | $2,501 | $4,642 | $89,214 |
| Melamine | | | | $441 | $107 |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $297,716 | $481,522 | $345,300 | $1,775,370 | $1,226,777 |
| 6-Hexanelactam (epsilon-caprolactam) | | | | | $54 |
| Lactams (excl. of 2933.71 & 2933.72) | | $2,999 | $4,228 | | |
| Total | $511,861 | $1,940,100 | $1,475,991 | $2,297,767 | $2,268,236 |
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