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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $321,207 | $7,906 | $42,359,152 | $89,880,311 | $119,960,050 | $86,609,943 | $65,225,927 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $366,971 | $100,814 | $140,529 | $6,376 | $44,176 | $74,518 | $45,816 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $825,328 | $2,366,382 | $4,170,974 | $9,197,823 | $11,266,823 | $2,513,918 | $4,714,011 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | $17,224 | $50,546 | $80,854 | $78,759 | $2,200 | $76 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $12,266 | $18,905 | $3,074,123 | $3,337,378 | $3,248,280 | $12,635,400 | $4,109,229 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $620 | $3,351 | $52,514 | $145,820 | $283,528 | $329,727 | $409,164 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $7,184,025 | $7,975,636 | $4,855,432 | $4,290,934 | $5,899,061 | $3,269,668 | $3,362,321 |
| Total | $8,710,417 | $10,490,218 | $54,703,270 | $106,939,496 | $140,780,677 | $105,435,374 | $77,866,544 |
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