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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Phenazone (antipyrin) & its derivs. | | $101,897 | $47,056 | $4,311 | $75,792 | $59,616 |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | | $470 | $606 | | | |
| Hydantoin & its derivs. | | $496 | | | | $698 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $13,821 | $61,796 | $55,300 | $56,342 | $94,628 | $145,175 |
| Pyridine & its salts | $660 | $559 | $37,199 | | $484 | |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $6,932 | $10,308 | $1,643 | $59,565 | $6,086 | $2,259 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $15,675 | $16,365 | $25,199 | $37,667 | $69,480 | $93,764 |
| Melamine | | $2 | | | | |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $3,507 | | | | | |
| Lactams (excl. of 2933.71 & 2933.72) | $550 | | | | $879 | |
| Total | $41,145 | $191,893 | $167,003 | $157,885 | $247,349 | $301,512 |
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