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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $982,796,227 | $1,406,633,851 | $1,886,338,912 | $2,136,678,010 | $1,114,429,938 | $1,353,558,507 | $1,637,363,639 |
| Articles of iron or steel | $959,058,100 | $1,006,476,061 | $1,223,511,932 | $1,423,089,961 | $1,107,809,933 | $1,171,040,258 | $1,216,474,500 |
| Copper and articles thereof | $391,715,004 | $691,592,772 | $841,065,437 | $847,994,694 | $525,738,346 | $761,064,984 | $882,512,925 |
| Nickel and articles thereof | $18,187,542 | $19,714,723 | $19,517,748 | $15,913,972 | $5,225,179 | $11,139,626 | $9,008,274 |
| Aluminum and articles thereof | $806,024,705 | $1,075,887,041 | $1,224,722,879 | $1,195,209,551 | $688,765,924 | $867,545,582 | $793,622,701 |
| Lead and articles thereof | $24,626,204 | $26,532,382 | $43,148,369 | $33,838,647 | $13,905,952 | $19,609,315 | $26,589,141 |
| Zinc and articles thereof | $51,913,807 | $100,160,965 | $112,633,833 | $78,181,146 | $45,612,534 | $75,320,306 | $67,518,369 |
| Tin and articles thereof | $9,382,264 | $10,199,146 | $13,830,966 | $14,353,291 | $6,573,459 | $11,368,560 | $15,541,638 |
| Other base metals; cermets; articles thereof | $7,687,374 | $7,287,859 | $6,888,119 | $9,785,053 | $4,174,279 | $17,137,799 | $35,667,737 |
| Tools, implements, cutlery, spoons and forks, of base metal | $242,219,246 | $217,614,314 | $234,509,201 | $239,683,648 | $166,562,394 | $207,011,927 | $216,133,498 |
| Miscellaneous articles of base metal | $247,305,166 | $266,524,642 | $318,097,770 | $333,379,024 | $253,919,287 | $318,380,792 | $331,704,784 |
| Total | $3,740,915,639 | $4,828,623,756 | $5,924,265,166 | $6,328,106,997 | $3,932,717,225 | $4,813,177,656 | $5,232,137,206 |
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