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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Phenazone (antipyrin) & its derivs. | $34,627 | $36,006 | $47,614 | $96,798 | $58,010 | $41,288 | $72,608 |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | $3,891 | $7,150 | | $3,383 | $20,996 | $4,108 | $2,211 |
| Hydantoin & its derivs. | | | $2,284 | $1,280 | $4,111 | $3,397 | $5,010 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $50,166 | $96,181 | $20,181 | $41,476 | $72,223 | $218,394 | $503,325 |
| Pyridine & its salts | $42 | $17 | $49 | $413 | $216 | $78 | $322 |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $112,452 | $62,337 | $22,824 | $91,952 | $177,583 | $260,621 | $302,234 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $92,123 | $38,105 | $37,681 | $18,064 | $34,529 | $56,779 | $178,898 |
| Melamine | | | | $59 | $447 | $24 | $29 |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $12,448 | $14,537 | $24,242 | $27,544 | $29,933 | $42,892 | $266,860 |
| Lactams (excl. of 2933.71 & 2933.72) | $8,863 | | | $3,799 | $365,012 | $56,700 | $331 |
| Total | $314,612 | $254,333 | $154,875 | $284,768 | $763,060 | $684,281 | $1,331,828 |
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