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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $630,010,077 | $748,322,118 | $983,358,778 | $1,069,540,051 | $637,275,273 | $880,854,158 | $1,146,159,862 |
| Articles of iron or steel | $858,640,047 | $1,028,350,060 | $1,273,719,689 | $1,501,082,926 | $1,130,148,408 | $1,210,855,694 | $1,472,375,823 |
| Copper and articles thereof | $162,025,123 | $242,902,207 | $228,314,205 | $238,325,403 | $157,252,289 | $250,114,386 | $335,987,301 |
| Nickel and articles thereof | $4,466,536 | $2,837,951 | $2,249,444 | $74,676 | $530,619 | $270,386 | $261,852 |
| Aluminum and articles thereof | $427,415,430 | $627,945,347 | $757,387,316 | $748,905,282 | $437,568,648 | $561,800,979 | $593,441,762 |
| Lead and articles thereof | $2,436,047 | $5,844,905 | $12,343,145 | $13,015,622 | $13,147,719 | $21,508,185 | $23,690,376 |
| Zinc and articles thereof | $2,636,183 | $6,183,920 | $7,904,358 | $6,556,201 | $2,396,282 | $3,875,267 | $5,080,058 |
| Tin and articles thereof | $4,375,846 | $5,220,091 | $6,816,170 | $7,567,653 | $5,574,142 | $7,317,978 | $10,913,318 |
| Other base metals; cermets; articles thereof | $664,858 | $1,517,674 | $4,184,010 | $3,175,737 | $1,603,318 | $1,585,723 | $4,945,537 |
| Tools, implements, cutlery, spoons and forks, of base metal | $120,673,836 | $152,324,508 | $175,824,759 | $183,244,281 | $150,324,564 | $158,326,102 | $191,102,977 |
| Miscellaneous articles of base metal | $222,887,849 | $263,433,584 | $319,824,758 | $312,423,756 | $249,206,340 | $301,819,165 | $343,687,674 |
| Total | $2,436,231,832 | $3,084,882,365 | $3,771,926,632 | $4,083,911,588 | $2,785,027,602 | $3,398,328,023 | $4,127,646,540 |
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