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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 |
| Phenazone (antipyrin) & its derivs. | $357,843 | $324,267 | $327,813 | $416,302 | $364,303 |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | $145,056 | $279,773 | $710,897 | $480,790 | $770,813 |
| Hydantoin & its derivs. | $79,521 | $83,386 | $109,726 | $191,255 | $127,912 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $326,909 | $458,275 | $501,101 | $632,822 | $415,459 |
| Pyridine & its salts | $327 | $4,541 | $2,112 | $5,462 | $4,510 |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $4,449,826 | $3,583,278 | $4,374,305 | $7,280,099 | $4,794,675 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $1,093,465 | $1,560,420 | $1,966,318 | $2,289,092 | $1,952,018 |
| Melamine | $40 | $28 | | $42 | $20 |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $147,435 | $190,964 | $304,878 | $380,636 | $371,096 |
| 6-Hexanelactam (epsilon-caprolactam) | $2,662 | $2,457 | $3,750 | $5,385 | $2,877 |
| Lactams (excl. of 2933.71 & 2933.72) | $207,842 | $259,684 | $324,421 | $966,512 | $552,398 |
| Total | $6,810,926 | $6,747,073 | $8,625,321 | $12,648,397 | $9,356,081 |
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