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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 ... | $74,568,306 | $71,884,175 | $124,827,540 | $94,618,562 | $72,687,160 | $87,679,041 | $118,398,541 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $2,029,373 | $1,386,147 | $2,367,539 | $1,687,080 | $6,141,678 | $11,205,621 | $3,926,429 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $5,204,195 | $10,168,173 | $26,342,409 | $52,400,150 | $42,635,752 | $72,579,966 | $114,716,840 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $10,805,534 | $13,847,963 | $12,387,527 | $51,169,923 | $32,011,694 | $7,740,034 | $12,358,882 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $651,998 | $1,669,008 | $1,996,529 | $719,668 | $266,803 | $566,690 | $126,181 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $748,718 | $16,534,881 | $3,249,286 | $2,312,919 | $796,218 | $711,488 | $1,039,270 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $52,840,416 | $51,033,336 | $39,468,435 | $93,960,960 | $125,694,930 | $76,822,780 | $117,678,149 |
| Total | $146,848,540 | $166,523,683 | $210,639,265 | $296,869,262 | $280,234,235 | $257,305,620 | $368,244,292 |
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