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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 ... | $61,126 | $9,175 | $522,189 | $210,165 | $48,393 | $24,569 | $7,623 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | | | $8,914 | $88,362 | | $20,081 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $6,640 | $1,229,207 | $2,550,328 | $3,631,510 | $2,141,770 | $449,148 | $3,604 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | $115,092 | $312,220 | | | | $187,939 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $468,270 | $1,470,689 | $3,018,202 | $2,095,698 | $2,756,956 | $2,197,336 | $1,650,174 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $383,983 | $2,375,275 | $7,495,379 | $664,432 | $3,606,315 | $1,996,114 | $1,821,071 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $109,814 | $136,089 | $427,776 | $132,467 | $136,872 | $1,043,962 | $173,183 |
| Total | $1,029,833 | $5,335,527 | $14,326,094 | $6,743,186 | $8,778,668 | $5,711,129 | $3,863,675 |
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