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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron oxides & hydroxides | $180,933,185 | $200,370,569 | $191,244,979 | $193,911,825 | $149,197,923 | $192,108,934 | $219,823,519 |
| Earth colours cont. 70%/more by wt. of combined iron evaluated as Fe2O3 | $116,650 | $259,192 | $178,076 | $255,094 | $135,824 | $130,293 | $168,117 |
| Total | $181,049,835 | $200,629,761 | $191,423,055 | $194,166,919 | $149,333,747 | $192,239,227 | $219,991,636 |
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