|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2011 |
| Pyridine & its salts | $3,494 | | | | | |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $7,928 | | $14,969 | | | |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | | $168,811 | $89 | $26 | $67,583 | $10,292 |
| Lactams (excl. of 2933.71 & 2933.72) | $16,382 | | | $524 | $8,048 | |
| Total | $27,804 | $168,811 | $15,058 | $550 | $75,631 | $10,292 |
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