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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Hydantoin & its derivs. | $1,380 | $9,045 | | $6,577 | $12,348 | $404 | $27,761 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | | | $5,112 | $364 | $1,857 | $14,044 | $9,087 |
| Pyridine & its salts | | | | $78 | | | $102 |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $375 | | $143 | $6,393 | $8,270 | $5,849 | $2,966 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | | $2,631 | $741 | $726 | | $145 | $40,503 |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $721 | $31,617 | $12,150 | $9,393 | $3,397 | $9,317 | $30,193 |
| Lactams (excl. of 2933.71 & 2933.72) | | | | $394 | $102,831 | | $190,695 |
| Total | $2,476 | $43,293 | $18,146 | $23,925 | $128,703 | $29,759 | $301,307 |
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