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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Phenazone (antipyrin) & its derivs. | | $3,595 | | | | | |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | | $122 | | | | $242 | $547 |
| Hydantoin & its derivs. | $8,730 | $11,653 | $33,025 | $28,215 | $17,740 | $10,259 | $779 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $32,853 | $32,716 | $101,720 | $78,898 | $46,091 | $44,499 | $95,395 |
| Pyridine & its salts | | $217 | $71 | $618 | | | |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $67,648 | $117,396 | $314,860 | $651,158 | $461,482 | $561,231 | $335,121 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $13,285 | $661,085 | $710,258 | $579,966 | $31,424 | $22,979 | $42,040 |
| Melamine | | | | | | $579 | |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $209,746 | $135,868 | $242,547 | $71,867 | $273,844 | $142,372 | $143,686 |
| Lactams (excl. of 2933.71 & 2933.72) | | $26,027 | | $123 | $359,319 | $715,981 | $464,007 |
| Total | $332,262 | $988,679 | $1,402,481 | $1,410,845 | $1,189,900 | $1,498,142 | $1,081,575 |
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