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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Phenazone (antipyrin) & its derivs. | | $55 | | $22,841 | $68 | $16 | $1,371 |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | | $168,130 | $3,254 | $8,886 | | $2,983 | |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $3,907,947 | $757,473 | $1,882,621 | $1,100,211 | $323,726 | $1,080,397 | $859,934 |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $733,256 | $387,799 | $193,869 | $4,343 | $8,368 | $1,126,252 | $967,611 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $336,919 | $142,131 | $391,169 | $136,308 | $65,932 | $1,795 | $93,799 |
| Melamine | | $53 | $164 | | $31,350 | | $223,111 |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $480,480 | $530,041 | $442,768 | $16,432 | $3,873 | $74,136 | $36,096 |
| Lactams (excl. of 2933.71 & 2933.72) | | | | | | $107,899 | |
| Total | $5,458,602 | $1,985,682 | $2,913,845 | $1,289,021 | $433,317 | $2,393,478 | $2,181,922 |
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