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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Permanent magnets & arts. intended to become permanent magnets after magnet ... | $4,442 | $1,639 | $15,537 | $716 | $63,249 | $100,618 |
| Permanent magnets & arts. intended to become permanent magnets after magnet ... | $13,384 | $49,800 | $31,879 | $42,997 | $41,996 | $350,226 |
| Electro-magnetic couplings, clutches & brakes | $6,683 | $6,801 | $825 | $154,732 | $528,989 | $428,472 |
| Electro-magnetic lifting heads | $781 | | | | | |
| Electro-magnets n.e.s. in 85.05; electro-magnetic/permanent magnet chucks, ... | $20,919 | $11,954 | $51,524 | $22,556 | $170,500 | $507,791 |
| Total | $46,209 | $70,194 | $99,765 | $221,001 | $804,734 | $1,387,107 |
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