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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Line pipe (excl. seamless), of a kind used for oil/gas pipelines, of iron/s ... | $12,981,097 | $11,386,229 | $11,454,636 | $4,064,831 | $5,740,983 | $5,406,368 | $29,815,602 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $11,000,157 | $5,915,610 | $1,444,785 | $13,847,362 | $2,018,663 | $5,730,817 | $12,724,724 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $2,882,725 | $2,832,442 | $6,055,711 | $5,662,516 | $1,765,465 | $2,143,915 | $8,187,589 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $5,306,509 | $5,527,754 | $6,727,815 | $26,391,255 | $10,197,385 | $5,029,019 | $5,351,459 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $2,452,011 | $1,764,075 | $3,254,556 | $64,890,425 | $41,056,038 | $19,337,711 | $7,862,590 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $502,010 | $523,911 | $1,999,479 | $913,294 | $1,606,498 | $1,486,650 | $29,216,485 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $6,084,461 | $3,375,375 | $4,705,009 | $17,898,718 | $13,837,394 | $13,389,897 | $6,011,389 |
| Total | $41,208,970 | $31,325,396 | $35,641,991 | $133,668,401 | $76,222,426 | $52,524,377 | $99,169,838 |
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