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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Phenazone (antipyrin) & its derivs. | | | | | | $150 | |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | | | | $242 | $1,230 | | $50 |
| Hydantoin & its derivs. | $394 | $414 | $13,317 | $2,968 | $13,485 | $18,797 | $48,260 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $568 | $2,711 | $870 | $917 | $1,843 | $791 | $631 |
| Pyridine & its salts | $129 | $275 | $3,764 | $430 | $289 | $405 | $431 |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $1,271 | $4,299 | $19 | $9,664 | $1,349,140 | $3,223 | $4,968 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $808 | $1,120 | $24,998 | $41,444 | $29,425 | $14,251 | $32,396 |
| Melamine | | | $4,013 | $5,524 | $907 | $1,786 | $213,658 |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $174,235 | $102,700 | $494,593 | $524,564 | $640,644 | $293,550 | $114,361 |
| 6-Hexanelactam (epsilon-caprolactam) | | $460 | $93 | $430 | $7,758 | $721 | $1,833 |
| Lactams (excl. of 2933.71 & 2933.72) | $260 | $21,273 | $729 | $220 | $30,598 | $1,776 | $19,544 |
| Total | $177,665 | $133,252 | $542,396 | $586,403 | $2,075,319 | $335,450 | $436,132 |
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