|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Electrical insulators, of glass | $186,000 | | | $6,000 | $27,000 | $64,000 | $4,000 |
| Electrical insulators, of ceramics | $3,991,000 | | | $4,660,000 | $4,160,000 | $4,312,000 | $4,850,000 |
| Electrical insulators of any mat. other than glass & ceramics | $13,366,000 | $16,643,000 | $23,026,000 | $24,914,000 | $21,146,000 | $18,206,000 | $17,459,000 |
| Total | $17,543,000 | $16,643,000 | $23,026,000 | $29,580,000 | $25,333,000 | $22,582,000 | $22,313,000 |
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