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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $493,388 | $563,857 | $2,178,847 | $2,217,370 | $130,849 | $1,864,704 |
| Pyridine & its salts | | $1,199 | | | | $87,522 |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $48,858 | $3,168,768 | $2,181,989 | $1,987,237 | $1,449,720 | $3,938,916 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | | $850,316 | $487,116 | $1,685,942 | $1,269,257 | $3,733,970 |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | | $29,140 | | $178,365 | $887,898 | $869,210 |
| Lactams (excl. of 2933.71 & 2933.72) | | | | | | $387,284 |
| Total | $542,246 | $4,613,280 | $4,847,952 | $6,068,914 | $3,737,724 | $10,881,606 |
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