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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $48,880,152 | $53,784,705 | $80,598,056 | $101,455,384 | $64,627,957 | $87,033,485 | $85,218,078 |
| Articles of iron or steel | $55,085,427 | $59,816,735 | $71,808,116 | $72,750,912 | $66,364,431 | $74,958,119 | $134,890,971 |
| Copper and articles thereof | $5,089,996 | $6,554,482 | $11,207,905 | $11,566,235 | $7,653,317 | $11,352,919 | $12,634,689 |
| Nickel and articles thereof | $9,585 | $11,415 | $38,369 | $14,828 | $81,165 | $36,430 | $64,256 |
| Aluminum and articles thereof | $18,960,860 | $21,804,382 | $26,578,619 | $33,058,882 | $28,145,250 | $29,883,461 | $35,910,497 |
| Lead and articles thereof | $58,215 | $54,718 | $114,055 | $92,261 | $87,080 | $82,126 | $148,560 |
| Zinc and articles thereof | $2,361,924 | $3,544,932 | $4,083,056 | $2,748,388 | $1,282,361 | $2,442,407 | $2,224,666 |
| Tin and articles thereof | $50,226 | $98,666 | $63,915 | $100,704 | $52,207 | $61,483 | $138,888 |
| Other base metals; cermets; articles thereof | $105,624 | $28,195 | $30,677 | $42,623 | $10,913 | $10,831 | $7,003 |
| Tools, implements, cutlery, spoons and forks, of base metal | $9,100,157 | $8,558,895 | $10,280,328 | $12,813,573 | $10,472,083 | $13,649,663 | $14,098,974 |
| Miscellaneous articles of base metal | $18,670,674 | $18,045,173 | $24,312,962 | $28,091,118 | $25,559,803 | $31,559,382 | $29,670,885 |
| Total | $158,372,840 | $172,302,298 | $229,116,058 | $262,734,908 | $204,336,567 | $251,070,306 | $315,007,467 |
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