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| Effective Date | Sotech Nitram (%) | F.C.A (%) | | 2008-05-05 | 12.50 | 41.30 |  | | 2008-04-28 | 12.50 | 41.50 |  | | 2008-04-21 | 12.50 | 40.50 |  | | 2008-04-14 | 12.50 | 38.90 |  | | 2008-04-07 | 12.50 | 38.40 |  | | 2008-03-31 | 12.50 | 38.30 |  | | 2008-03-24 | 12.50 | 39.20 |  | | 2008-03-17 | 10.50 | 37.10 |  | | 2008-03-10 | 10.50 | 34.30 |  | | 2008-03-03 | 10.50 | 33.90 |  | | 2008-02-25 | 10.50 | 33.20 |  | | 2008-02-18 | 10.50 | 30.40 |  | | 2008-02-11 | 10.50 | 30.00 |  | | 2008-02-04 | 10.50 | 31.40 |  | | 2008-01-28 | 10.50 | 32.10 |  | | 2008-01-21 | 10.50 | 32.30 |  | | 2008-01-14 | 10.50 | 32.60 |  | | 2008-01-07 | 10.50 | 32.10 |  | | 2007-12-31 | 10.50 | 31.80 |  | | 2007-12-24 | 10.50 | 31.70 |  | | 2007-12-17 | 10.50 | 30.80 |  | | 2007-12-10 | 10.50 | 30.80 |  | | 2007-12-03 | 10.50 | 31.10 |  | | 2007-11-26 | 10.50 | 29.50 |  | | 2007-11-19 | 10.50 | 27.90 |  | | 2007-11-12 | 10.50 | 27.10 |  | | 2007-11-05 | 10.50 | 26.20 |  | | 2007-10-29 | 10.50 | 25.80 |  | | 2007-10-22 | 10.50 | 25.50 |  | | 2007-10-15 | 10.50 | 24.90 |  |
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