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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Phenazone (antipyrin) & its derivs. | $111 | $166 | | | $1,537 | | |
| Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ... | $1,380,845 | $5,156,730 | $6,012,576 | $6,928,878 | $5,012,578 | $488,023 | $12,966,781 |
| Hydantoin & its derivs. | $386,929 | $49,699 | $107,941 | $519,666 | $681,688 | $433,025 | $1,509,289 |
| Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... | $542,135 | $1,982,273 | $2,004,097 | $2,155,752 | $4,130,169 | $6,546,088 | $9,701,800 |
| Pyridine & its salts | $667 | $970 | | | | | $12,100 |
| Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... | $3,864,478 | $11,870,922 | $7,020,898 | $12,880 | $2,960 | $94,208 | $466,454 |
| Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ... | $32,595,092 | $37,016,436 | $36,272,203 | $35,244,231 | $45,631,920 | $41,819,470 | $40,343,087 |
| Melamine | | $298 | | | | | |
| Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... | $31,318 | $16,357 | $6,935 | $35,577 | $18,197 | $60,259 | $36,311 |
| 6-Hexanelactam (epsilon-caprolactam) | | | | | $6,897 | | |
| Lactams (excl. of 2933.71 & 2933.72) | $31,745 | $49,744 | $249,141 | $29,211 | $50,817 | $1,220,335 | $1,836,256 |
| Total | $38,833,320 | $56,143,595 | $51,673,791 | $44,926,195 | $55,536,763 | $50,661,408 | $66,872,078 |
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