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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Phenazone (antipyrin) & its derivs. | $447 | $1,519 | $3,553 | $977 | $1,776 | $16,571 | $2,237 |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | $99 | $322 | $250 | | | | $1,155 |
| Hydantoin & its derivs. | $7,418 | $37 | | $1,119 | | | $568 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $744 | $2,338 | $10,092 | $19 | $7,965 | $38,722 | $72,359 |
| Pyridine & its salts | $112 | $603 | $160 | $57 | | | |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $35,252 | $25,722 | $37,012 | $20,470 | $16,121 | $76,842 | $23,855 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $3,002 | $2,203 | $32,582 | $120,038 | $174,258 | $106,453 | $109,762 |
| Melamine | $25,354 | $45,046 | $34,068 | | $9,623 | | |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $390,401 | $545,404 | $595,946 | $969,029 | $12,906 | $230,415 | $342,047 |
| Lactams (excl. of 2933.71 & 2933.72) | $645 | $430 | $462 | $19 | | | $3,697 |
| Total | $463,474 | $623,624 | $714,125 | $1,111,728 | $222,649 | $469,003 | $555,680 |
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