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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $312,981,033 | $662,375,219 | $574,537,688 | $915,470,589 | $508,089,011 | $698,102,951 | $855,539,846 |
| Articles of iron or steel | $512,307,303 | $780,664,105 | $965,785,521 | $1,196,325,749 | $893,728,190 | $1,230,403,870 | $1,651,753,442 |
| Copper and articles thereof | $1,257,137,001 | $1,904,079,899 | $2,731,369,882 | $2,202,277,756 | $2,366,933,969 | $3,304,602,144 | $3,809,104,205 |
| Nickel and articles thereof | $926,568,765 | $1,265,776,193 | $2,354,862,703 | $1,429,142,634 | $583,723,415 | $1,435,718,417 | $1,215,588,012 |
| Aluminum and articles thereof | $571,585,014 | $819,265,510 | $831,806,596 | $828,137,282 | $493,058,255 | $736,336,540 | $835,939,095 |
| Lead and articles thereof | $292,033 | $744,974 | $1,681,649 | $3,229,629 | $5,581,694 | $14,646,910 | $18,017,357 |
| Zinc and articles thereof | $1,706,046 | $6,631,589 | $8,531,527 | $7,852,489 | $4,328,451 | $2,425,104 | $2,905,233 |
| Tin and articles thereof | $919,726,372 | $926,801,701 | $1,034,244,441 | $1,993,477,554 | $1,267,964,433 | $1,734,649,369 | $2,438,740,913 |
| Other base metals; cermets; articles thereof | $817,863 | $731,525 | $2,065,024 | $2,602,285 | $2,237,288 | $187,084 | $121,701 |
| Tools, implements, cutlery, spoons and forks, of base metal | $68,322,032 | $48,207,404 | $53,700,644 | $65,276,015 | $47,237,154 | $54,072,087 | $65,717,454 |
| Miscellaneous articles of base metal | $118,032,668 | $113,540,620 | $137,724,637 | $186,027,385 | $166,558,851 | $239,325,259 | $267,887,694 |
| Total | $4,689,476,130 | $6,528,818,739 | $8,696,310,312 | $8,829,819,367 | $6,339,440,711 | $9,450,469,735 | $11,161,314,952 |
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