|
| Commodity | 2006 | 2009 | 2010 | 2011 |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | | $123,957 | $177,009 | $153,174 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $82 | $11,448 | | |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | | $10,617 | | |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | | $2,735 | $1,998 | $2,637 |
| Total | $82 | $148,757 | $179,007 | $155,811 |
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