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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2011 |
| Phenazone (antipyrin) & its derivs. | $871,722 | $925,166 | $1,292,856 | $1,564,490 | $1,449,788 | $1,648,506 |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | $2,861 | | $20,628 | | $8,580 | $9,236 |
| Hydantoin & its derivs. | $2,221 | $529 | $971 | $442 | $811 | $1,582 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $200,899 | $103,032 | $344,270 | $718,837 | $269,755 | $365,572 |
| Pyridine & its salts | $244 | $175 | $763 | $233 | | $39 |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $771,375 | $937,886 | $1,220,979 | $1,683,898 | $763,262 | $1,328,317 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $434,623 | $310,735 | $429,939 | $649,012 | $528,487 | $526,485 |
| Melamine | | | $12 | | $125 | |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $22,984 | $170,475 | $467,746 | $113,590 | $174,819 | $450,355 |
| 6-Hexanelactam (epsilon-caprolactam) | | | | $21 | | |
| Lactams (excl. of 2933.71 & 2933.72) | | $934 | $58 | $155 | $3,425 | $7,512 |
| Total | $2,306,929 | $2,448,932 | $3,778,222 | $4,730,678 | $3,199,052 | $4,337,604 |
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