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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | $416 | $154 | | $801 | $408 | $760 | $794 |
| Hydantoin & its derivs. | | $1,241 | | $9,999 | | $288 | $2,324 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $416 | $196 | | | $7,342 | $1,041 | |
| Pyridine & its salts | | | | | | $2,266 | |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $208 | | | | $9,173 | $1,556 | $135 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $208 | $10 | | $500 | $546 | $1,047 | |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $149,994 | $82,054 | $186,290 | $303,437 | $271,231 | $278,465 | $126,426 |
| Lactams (excl. of 2933.71 & 2933.72) | | | | | | $620 | $562 |
| Total | $151,242 | $83,655 | $186,290 | $314,737 | $288,700 | $286,043 | $130,241 |
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