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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $10,911,939 | $8,536,841 | $19,127,571 | $24,731,093 | $11,968,733 | $21,630,856 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $9,232,988 | $15,920,361 | $25,689,675 | $8,666,124 | $3,299,843 | $5,701,824 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $7,240,633 | $9,329,593 | $8,313,828 | $17,965,887 | $7,347,557 | $13,415,667 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $100,737 | $243,730 | $2,855,476 | $10,270,852 | $26,150,384 | $12,029,669 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $64,280,203 | $91,704,141 | $183,685,362 | $262,886,667 | $374,732,403 | $172,038,849 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $2,088,118 | $870,645 | $2,465,594 | $3,243,350 | $2,720,801 | $2,687,112 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $10,924,376 | $7,435,029 | $13,474,278 | $12,006,730 | $5,046,737 | $2,901,975 |
| Total | $104,778,994 | $134,040,340 | $255,611,784 | $339,770,703 | $431,266,458 | $230,405,952 |
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