|
| Commodity | 2005 | 2006 | 2007 | 2008 |
| Electrical insulators, of glass | | $1,882 | | |
| Electrical insulators, of ceramics | $169,250 | $275,092 | $135,388 | $50,207 |
| Electrical insulators of any mat. other than glass & ceramics | $27,878 | $63,356 | $63,303 | $61,042 |
| Total | $197,128 | $340,330 | $198,691 | $111,249 |
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