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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 |
| Iron and steel | $40,620,984 | $68,441,242 | $70,807,449 | $96,479,418 | $54,030,270 |
| Articles of iron or steel | $47,029,711 | $60,139,651 | $64,917,815 | $113,061,931 | $118,466,078 |
| Copper and articles thereof | $10,045,937 | $16,126,415 | $18,979,757 | $21,079,700 | $16,177,923 |
| Nickel and articles thereof | $116,738 | $189,703 | $311,918 | $186,067 | $250,070 |
| Aluminum and articles thereof | $20,758,666 | $26,576,195 | $28,532,695 | $33,527,936 | $25,624,542 |
| Lead and articles thereof | $218,223 | $444,492 | $859,210 | $723,201 | $843,191 |
| Zinc and articles thereof | $908,206 | $1,696,514 | $1,708,451 | $1,255,536 | $548,794 |
| Tin and articles thereof | $281,293 | $271,404 | $448,593 | $295,249 | $106,794 |
| Other base metals; cermets; articles thereof | $644,898 | $595,588 | $351,215 | $277,856 | $481,647 |
| Tools, implements, cutlery, spoons and forks, of base metal | $13,259,348 | $15,890,682 | $21,707,386 | $27,312,143 | $24,087,521 |
| Miscellaneous articles of base metal | $9,059,961 | $11,465,542 | $12,707,698 | $18,165,216 | $15,968,491 |
| Total | $142,943,965 | $201,837,428 | $221,332,187 | $312,364,253 | $256,585,321 |
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