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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Central heating boilers (excl. of 84.02) | $17,221,748 | $24,367,443 | $24,513,357 | $27,226,834 | $16,469,946 | $16,009,476 | $18,786,297 |
| Parts of the boilers of 8403.10 | $2,602,156 | $3,780,821 | $6,206,641 | $7,619,730 | $15,599,683 | $17,212,676 | $20,354,435 |
| Total | $19,823,904 | $28,148,264 | $30,719,998 | $34,846,564 | $32,069,629 | $33,222,152 | $39,140,732 |
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