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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 ... | $456,607,881 | $136,102,220 | $2,947,856 | $3,545,695 | $2,803,216 | $962,850 | $1,074,313 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $14,704,089 | $2,631,352 | $1,552,086 | $1,976,586 | $119,420,901 | $1,419,497 | $1,095,006 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $6,459,276 | $28,026,866 | $8,103,235 | $10,280,229 | $3,321,177 | $4,592,160 | $6,014,736 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $668,561 | $255,683 | $302,837 | $5,197,993 | $15,637,308 | $1,558,521 | $1,969,575 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $5,745,111 | $4,867,399 | $9,788,203 | $10,811,750 | $5,277,645 | $6,999,934 | $21,232,792 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $8,627,465 | $10,667,974 | $16,693,331 | $32,596,914 | $12,255,646 | $7,871,342 | $8,645,976 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $5,783,719 | $2,317,793 | $4,961,224 | $3,529,069 | $2,171,396 | $2,123,419 | $2,537,426 |
| Total | $498,596,102 | $184,869,287 | $44,348,772 | $67,938,236 | $160,887,289 | $25,527,723 | $42,569,824 |
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