|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Electrical insulators, of glass | $41,000 | $157,000 | $449,000 | $180,000 | $90,000 | $37,000 | $111,000 |
| Electrical insulators, of ceramics | $1,357,000 | $1,678,000 | $1,834,000 | $2,575,000 | $2,862,000 | $1,909,000 | $2,994,000 |
| Electrical insulators of any mat. other than glass & ceramics | $4,935,000 | $5,866,000 | $6,037,000 | $6,262,000 | $4,214,000 | $5,032,000 | $5,443,000 |
| Total | $6,333,000 | $7,701,000 | $8,320,000 | $9,017,000 | $7,166,000 | $6,978,000 | $8,548,000 |
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