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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 ... | $105,964,036 | $137,197,989 | $194,274,676 | $408,213,072 | $1,473,248,983 | $188,927,940 | $212,543,582 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $9,130,771 | $13,755,514 | $8,783,753 | $14,788,930 | $5,492,591 | $8,299,474 | $72,120,324 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $11,961,445 | $119,376,457 | $129,284,934 | $94,099,497 | $32,344,839 | $60,543 | $8,097 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | | $35,096 | $94,374 | $113,905 | | |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $24,900,882 | $36,869,921 | $52,897,259 | $115,172,757 | $41,437,976 | $45,067,326 | $40,617,921 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $13,886,391 | $24,872,328 | $16,143,487 | $29,437,309 | $7,266,305 | $8,029,277 | $9,769,771 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $817,677 | $184,972 | $20,209 | $56,996 | $89 | $1,300 | $9,234 |
| Total | $166,661,202 | $332,257,181 | $401,439,414 | $661,862,935 | $1,559,904,688 | $250,385,860 | $335,068,929 |
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