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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Phenazone (antipyrin) & its derivs. | | | $139 | $756 | | |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | | | | $258 | | |
| Hydantoin & its derivs. | $3,534 | $3,001 | $367 | $2,693 | $2,455 | $6,171 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $854 | $4,301 | | $16,623 | $9,513 | $1,223 |
| Pyridine & its salts | | | | $21 | $1,059 | |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $713 | $755 | $4,673 | $4,867 | $5,629 | $6,190 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $931 | $217 | $540 | $900 | $991 | $11,421 |
| Melamine | | | | | | $20,271 |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $6,355 | $38,631 | $5,982 | $64,229 | $4,983 | $6,236 |
| Lactams (excl. of 2933.71 & 2933.72) | | | $25 | | $318 | |
| Total | $12,387 | $46,905 | $11,726 | $90,347 | $24,948 | $51,512 |
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