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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Phenazone (antipyrin) & its derivs. | | | $11,472 | $270 | $48,059 | $306 | $8,828 |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | $5,691 | | | $13,439 | | $2,730 | $2,324 |
| Hydantoin & its derivs. | $49,938 | $52,066 | $51,160 | $89,961 | $56,385 | $81,904 | $94,278 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $8,847 | $5,125 | | $3,793 | $21,436 | $4,000 | $37,427 |
| Pyridine & its salts | $1,434 | $3,422 | $639 | $5,513 | $3,673 | $110,447 | $218,560 |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $19,184 | $58,367 | $37,718 | $154,219 | $406,452 | $204,603 | $1,139,463 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $23,787 | $38,704 | $69,564 | $113,558 | $63,319 | $312,738 | $269,689 |
| Melamine | | $120,998 | $1 | $43,408 | $54,532 | $77,242 | $96,113 |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $355,198 | $666,458 | $526,594 | $934,914 | $1,056,842 | $1,202,315 | $1,620,656 |
| 6-Hexanelactam (epsilon-caprolactam) | $106,668,333 | $113,277,831 | $107,298,230 | $99,545,252 | $84,848,738 | $56,089,426 | $57,180,704 |
| Lactams (excl. of 2933.71 & 2933.72) | | | $41,486 | | $5,331 | $59,412 | $78,072 |
| Total | $107,132,412 | $114,222,971 | $108,036,864 | $100,904,327 | $86,564,767 | $58,145,123 | $60,746,114 |
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