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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 ... | $6,526,274 | $88,193,036 | $60,556,615 | $61,559,466 | $72,067,008 | $9,017,524 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $2,777,897 | $4,859,930 | $2,698,778 | $7,946,376 | $2,544,680 | $4,138,551 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $6,346,897 | $14,205,813 | $27,433,949 | $29,481,376 | $3,078,255 | $947,274 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $95,348 | $98,944 | $1,128,884 | $312,122 | $218,049 | $1,120,457 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $12,198,188 | $12,356,410 | $20,916,324 | $12,687,998 | $16,282,399 | $8,245,645 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $9,681,270 | $30,712,888 | $72,305,426 | $103,439,921 | $53,825,791 | $21,175,803 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $5,959,315 | $3,000,646 | $1,839,052 | $6,624,825 | $4,711,768 | $2,920,959 |
| Total | $43,585,189 | $153,427,667 | $186,879,028 | $222,052,084 | $152,727,950 | $47,566,213 |
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