|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Electrical insulators, of glass | $40,000 | $16,585 | $129,378 | $218,485 | $227,447 | $83,809 | $274,724 |
| Electrical insulators, of ceramics | $49,000 | $101,325 | $98,901 | $94,632 | $68,103 | $133,032 | $161,189 |
| Electrical insulators of any mat. other than glass & ceramics | $507,000 | $321,925 | $424,214 | $506,962 | $256,413 | $299,125 | $187,815 |
| Total | $596,000 | $439,835 | $652,493 | $820,079 | $551,963 | $515,966 | $623,728 |
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