|
| Commodity | 2008 | 2009 | 2010 | 2011 |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $33,813 | $142,016 | $184,312 | $538,670 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | | $13,990 | | |
| Melamine | $215,664 | | $89,738 | |
| 6-Hexanelactam (epsilon-caprolactam) | | | | $79,575 |
| Total | $249,477 | $156,006 | $274,050 | $618,245 |
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