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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 ... | $103,108,714 | $195,487,475 | $394,412,232 | $233,038,692 | $129,565,187 | $1,883,781 | $8,307,834 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $6,013,200 | $14,501,595 | $90,313,560 | $62,331,536 | $37,886,955 | $8,237,693 | $76,124,770 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $79,271,925 | $160,951,686 | $178,062,159 | $90,441,318 | $201,434,816 | $143,786,280 | $130,457,919 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $430,719 | $121,598 | $245,061 | $758,963 | $9,209 | $346,433 | $145,783 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $8,654,874 | $13,710,491 | $15,308,944 | $14,271,250 | $6,541,696 | $11,442,372 | $8,999,313 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $5,448,297 | $7,676,339 | $6,871,290 | $6,464,899 | $3,413,998 | $6,525,426 | $7,124,577 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $201,241 | $221,591 | $1,744,725 | $756,237 | $215,297 | $786,543 | $1,581,766 |
| Total | $203,128,970 | $392,670,775 | $686,957,971 | $408,062,895 | $379,067,158 | $173,008,528 | $232,741,962 |
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