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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 ... | $10,092,501 | $27,378,678 | $51,115,347 | $91,488,797 | $37,511,668 | $51,530,380 | $85,962,699 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $7,016,882 | $8,856,313 | $11,916,421 | $15,387,994 | $10,241,528 | $34,995,079 | $42,133,527 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $6,474,381 | $8,321,443 | $30,581,450 | $3,708,661 | $2,283,167 | $3,211,177 | $1,852,715 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $19,575,526 | $9,760,456 | $17,690,130 | $12,563,572 | $3,030,605 | $4,890,706 | $3,080,614 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $6,001,235 | $7,520,247 | $5,548,169 | $17,418,758 | $10,243,788 | $8,590,297 | $8,309,408 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $9,714,858 | $14,257,839 | $16,089,259 | $7,095,936 | $4,631,067 | $4,225,268 | $10,753,547 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $18,706,677 | $15,448,340 | $9,907,622 | $25,872,504 | $19,312,484 | $12,576,929 | $5,374,650 |
| Total | $77,582,060 | $91,543,316 | $142,848,398 | $173,536,222 | $87,254,307 | $120,019,836 | $157,467,160 |
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