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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 ... | $108,729,883 | $136,128,367 | $149,748,527 | $316,574,143 | $231,533,124 | $84,623,759 | $192,348,284 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | $3,413,936 | $10,941,459 | $11,866,950 | $25,480,733 | $7,325,469 | $1,162,761 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $959,648 | $237,156 | $384,790 | $37,196 | $3,624 | $1,216,360 | $316,533 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $5,981,909 | $2,540,097 | $3,877,634 | $9,508,605 | $5,302,102 | | $3,959,609 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $184,170 | $571,716 | $1,776,147 | $2,604,645 | $1,127,369 | $47,074 | $46,945 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $66,984 | $7,095 | $2,749,608 | $1,600,243 | $61,950 | $253,681 | $315,827 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $19,544 | $16,700 | $88,056 | $24,107 | $12,840 | $6,928 | $25,820 |
| Total | $115,942,138 | $142,915,067 | $169,566,221 | $342,215,889 | $263,521,742 | $93,473,271 | $198,175,779 |
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