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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 |
| Phenazone (antipyrin) & its derivs. | $51,142 | $418,588 | $347 | $54,368 | $76,631 |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | $731,769 | $234,745 | $95,373 | $16,202 | $72,601 |
| Hydantoin & its derivs. | $190,779 | $13,775 | $175,244 | $64,103 | $153,489 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $2,945,277 | $7,370,481 | $4,626,791 | $2,682,116 | $5,201,486 |
| Pyridine & its salts | $36,698 | $32,692 | $2,587 | | |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $134,443 | $179,859 | $606,028 | $822,057 | $1,379,524 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $1,276,820 | $1,681,856 | $1,669,862 | $1,455,185 | $2,262,794 |
| Melamine | $57,251 | | | | |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $198,972 | $78,243 | $73,424 | $221,941 | $637,198 |
| Lactams (excl. of 2933.71 & 2933.72) | | $60,666 | $11,531 | $25,078 | |
| Total | $5,623,151 | $10,070,905 | $7,261,187 | $5,341,050 | $9,783,723 |
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