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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 ... | $1,059,827,099 | $1,192,458,921 | $1,142,218,678 | $1,443,718,897 | $851,590,935 | $950,321,325 | $920,183,242 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $220,990,908 | $242,251,221 | $306,429,152 | $321,033,742 | $205,487,766 | $194,595,231 | $354,813,202 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $927,870 | $18,505 | $200,371 | | $1,252,567 | $3,747,552 | $2,509,031 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $81,338,388 | $97,719,995 | $141,375,342 | $159,939,604 | $37,739,214 | $77,846,711 | $140,227,947 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $28,419,246 | $32,776,653 | $88,398,035 | $87,974,513 | $15,868,300 | $27,591,177 | $89,643,014 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $8,464,399 | $3,140,897 | $5,714,859 | $7,921,297 | $7,908,738 | $28,058,606 | $4,790,270 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $1,414,042 | $1,694,300 | $556,779 | $239,763 | $225,370 | $91,882 | $62,731 |
| Total | $1,401,381,952 | $1,570,060,492 | $1,684,893,216 | $2,020,827,816 | $1,120,072,890 | $1,282,252,484 | $1,512,229,437 |
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